Added ExcelWriter to components. refs #1185

+<?php
+namespace Tz\Wordpress\Tools\ExcelWriter;
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+PHPExcel_Autoloader::Register();
+PHPExcel_Shared_ZipStreamWrapper::register();
+// check mbstring.func_overload
+if (ini_get('mbstring.func_overload') & 2) {
+	throw new Exception('Multibyte function overloading in PHP must be disabled for string functions (2).');
+}
+PHPExcel_Shared_String::buildCharacterSets();
+
+
+class PHPExcel_Autoloader
+{
+	public static function Register() {
+		return spl_autoload_register(array(__NAMESPACE__ . '\\' . 'PHPExcel_Autoloader', 'Load'));
+	}	//	function Register()
+
+
+	public static function Load($pObjectName){
+		if ((class_exists($pObjectName)) || (strpos($pObjectName, 'PHPExcel') === False)) {
+			return false;
+		}
+
+        if (false !== strpos($pObjectName, '\\')) {
+            $pObjectName = str_ireplace('\\', DIRECTORY_SEPARATOR, array_pop(explode('\\', $pObjectName)));
+        }
+//        var_dump($pObjectName);
+		$pObjectFilePath =	PHPEXCEL_ROOT.
+							str_replace('_',DIRECTORY_SEPARATOR,$pObjectName).
+							'.php';
+
+		if ((file_exists($pObjectFilePath) === false) || (is_readable($pObjectFilePath) === false)) {
+			return false;
+		}
+
+		require_once $pObjectFilePath;
+	}	//	function Load()
+
+}
\ No newline at end of file

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_APC
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+	private $_cachePrefix = null;
+
+	private $_cacheTime = 600;
+
+
+	private function _storeData() {
+		$this->_currentObject->detach();
+
+		if (!apc_store($this->_cachePrefix.$this->_currentObjectID.'.cache',serialize($this->_currentObject),$this->_cacheTime)) {
+			$this->__destruct();
+			throw new Exception('Failed to store cell '.$cellID.' in APC');
+		}
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     *	Add or Update a cell in cache identified by coordinate address
+     *
+     *	@param	string			$pCoord		Coordinate address of the cell to update
+     *	@param	PHPExcel_Cell	$cell		Cell to update
+	 *	@return	void
+     *	@throws	Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+		$this->_cellCache[$pCoord] = true;
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+	/**
+	 *	Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+	 *
+	 *	@param	string		$pCoord		Coordinate address of the cell to check
+	 *	@return	void
+	 *	@return	boolean
+	 */
+	public function isDataSet($pCoord) {
+		//	Check if the requested entry is the current object, or exists in the cache
+		if (parent::isDataSet($pCoord)) {
+			if ($this->_currentObjectID == $pCoord) {
+				return true;
+			}
+			//	Check if the requested entry still exists in apc
+			$success = apc_fetch($this->_cachePrefix.$pCoord.'.cache');
+			if ($success === false) {
+				//	Entry no longer exists in APC, so clear it from the cache array
+				parent::deleteCacheData($pCoord);
+				throw new Exception('Cell entry '.$cellID.' no longer exists in APC');
+			}
+			return true;
+		}
+		return false;
+	}	//	function isDataSet()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		if (parent::isDataSet($pCoord)) {
+			$obj = apc_fetch($this->_cachePrefix.$pCoord.'.cache');
+			if ($obj === false) {
+				//	Entry no longer exists in APC, so clear it from the cache array
+				parent::deleteCacheData($pCoord);
+				throw new Exception('Cell entry '.$cellID.' no longer exists in APC');
+			}
+		} else {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = unserialize($obj);
+		//	Re-attach the parent worksheet
+		$this->_currentObject->attach($this->_parent);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+    /**
+     *	Delete a cell in cache identified by coordinate address
+     *
+     *	@param	string			$pCoord		Coordinate address of the cell to delete
+     *	@throws	Exception
+     */
+	public function deleteCacheData($pCoord) {
+		//	Delete the entry from APC
+		apc_delete($this->_cachePrefix.$pCoord.'.cache');
+
+		//	Delete the entry from our cell address array
+		parent::deleteCacheData($pCoord);
+	}	//	function deleteCacheData()
+
+
+	/**
+	 *	Clone the cell collection
+	 *
+	 *	@return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		parent::copyCellCollection($parent);
+		//	Get a new id for the new file name
+		$baseUnique = $this->_getUniqueID();
+		$newCachePrefix = substr(md5($baseUnique),0,8).'.';
+		$cacheList = $this->getCellList();
+		foreach($cacheList as $cellID) {
+			if ($cellID != $this->_currentObjectID) {
+				$obj = apc_fetch($this->_cachePrefix.$cellID.'.cache');
+				if ($obj === false) {
+					//	Entry no longer exists in APC, so clear it from the cache array
+					parent::deleteCacheData($cellID);
+					throw new Exception('Cell entry '.$cellID.' no longer exists in APC');
+				}
+				if (!apc_store($newCachePrefix.$cellID.'.cache',$obj,$this->_cacheTime)) {
+					$this->__destruct();
+					throw new Exception('Failed to store cell '.$cellID.' in APC');
+				}
+			}
+		}
+		$this->_cachePrefix = $newCachePrefix;
+	}	//	function copyCellCollection()
+
+
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+
+		//	Flush the APC cache
+		$this->__destruct();
+
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+	}	//	function unsetWorksheetCells()
+
+
+	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
+		$cacheTime	= (isset($arguments['cacheTime']))	? $arguments['cacheTime']	: 600;
+
+		if (is_null($this->_cachePrefix)) {
+			$baseUnique = $this->_getUniqueID();
+			$this->_cachePrefix = substr(md5($baseUnique),0,8).'.';
+			$this->_cacheTime = $cacheTime;
+
+			parent::__construct($parent);
+		}
+	}	//	function __construct()
+
+
+	public function __destruct() {
+		$cacheList = $this->getCellList();
+		foreach($cacheList as $cellID) {
+			apc_delete($this->_cachePrefix.$cellID.'.cache');
+		}
+	}	//	function __destruct()
+
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_CacheBase
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_CacheBase {
+
+	/**
+	 *	Parent worksheet
+	 *
+	 *	@var PHPExcel_Worksheet
+	 */
+	protected $_parent;
+
+	/**
+	 *	The currently active Cell
+	 *
+	 *	@var PHPExcel_Cell
+	 */
+	protected $_currentObject = null;
+
+	/**
+	 *	Coordinate address of the currently active Cell
+	 *
+	 *	@var string
+	 */
+	protected $_currentObjectID = null;
+
+
+	/**
+	 *	An array of cells or cell pointers for the worksheet cells held in this cache,
+	 *		and indexed by their coordinate address within the worksheet
+	 *
+	 *	@var array of mixed
+	 */
+	protected $_cellCache = array();
+
+
+	public function __construct(Tz\Wordpress\Tools\ExcelWriter\PHPExcel_Worksheet $parent) {
+		//	Set our parent worksheet.
+		//	This is maintained within the cache controller to facilitate re-attaching it to PHPExcel_Cell objects when
+		//		they are woken from a serialized state
+		$this->_parent = $parent;
+	}	//	function __construct()
+
+
+	/**
+	 *	Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+	 *
+	 *	@param	string		$pCoord		Coordinate address of the cell to check
+	 *	@return	void
+	 *	@return	boolean
+	 */
+	public function isDataSet($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return true;
+		}
+		//	Check if the requested entry exists in the cache
+		return isset($this->_cellCache[$pCoord]);
+	}	//	function isDataSet()
+
+
+    /**
+     *	Add or Update a cell in cache
+     *
+     *	@param	PHPExcel_Cell	$cell		Cell to update
+	 *	@return	void
+     *	@throws	Exception
+     */
+	public function updateCacheData(Tz\Wordpress\Tools\ExcelWriter\PHPExcel_Cell $cell) {
+		return $this->addCacheData($cell->getCoordinate(),$cell);
+	}	//	function updateCacheData()
+
+
+    /**
+     *	Delete a cell in cache identified by coordinate address
+     *
+     *	@param	string			$pCoord		Coordinate address of the cell to delete
+     *	@throws	Exception
+     */
+	public function deleteCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			$this->_currentObject->detach();
+			$this->_currentObjectID = $this->_currentObject = null;
+		}
+
+		if (is_object($this->_cellCache[$pCoord])) {
+			$this->_cellCache[$pCoord]->detach();
+			unset($this->_cellCache[$pCoord]);
+		}
+	}	//	function deleteCacheData()
+
+
+	/**
+	 *	Get a list of all cell addresses currently held in cache
+	 *
+	 *	@return	array of string
+	 */
+	public function getCellList() {
+		return array_keys($this->_cellCache);
+	}	//	function getCellList()
+
+
+	/**
+	 *	Sort the list of all cell addresses currently held in cache by row and column
+	 *
+	 *	@return	void
+	 */
+	public function getSortedCellList() {
+		$sortKeys = array();
+		foreach (array_keys($this->_cellCache) as $coord) {
+			list($column,$row) = sscanf($coord,'%[A-Z]%d');
+			$sortKeys[sprintf('%09d%3s',$row,$column)] = $coord;
+		}
+		ksort($sortKeys);
+
+		return array_values($sortKeys);
+	}	//	function sortCellList()
+
+
+	protected function _getUniqueID() {
+		if (function_exists('posix_getpid')) {
+			$baseUnique = posix_getpid();
+		} else {
+			$baseUnique = mt_rand();
+		}
+		return uniqid($baseUnique,true);
+	}
+
+	/**
+	 *	Clone the cell collection
+	 *
+	 *	@return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		$this->_parent = $parent;
+		if ((!is_null($this->_currentObject)) && (is_object($this->_currentObject))) {
+			$this->_currentObject->attach($parent);
+		}
+	}	//	function copyCellCollection()
+
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_DiscISAM
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_DiscISAM extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+	private $_fileName = null;
+	private $_fileHandle = null;
+
+
+	private function _storeData() {
+		$this->_currentObject->detach();
+
+		fseek($this->_fileHandle,0,SEEK_END);
+		$offset = ftell($this->_fileHandle);
+		fwrite($this->_fileHandle, serialize($this->_currentObject));
+		$this->_cellCache[$this->_currentObjectID]	= array('ptr' => $offset,
+															'sz'  => ftell($this->_fileHandle) - $offset
+														   );
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     *	Add or Update a cell in cache identified by coordinate address
+     *
+     *	@param	string			$pCoord		Coordinate address of the cell to update
+     *	@param	PHPExcel_Cell	$cell		Cell to update
+	 *	@return	void
+     *	@throws	Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		if (!isset($this->_cellCache[$pCoord])) {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		fseek($this->_fileHandle,$this->_cellCache[$pCoord]['ptr']);
+		$this->_currentObject = unserialize(fread($this->_fileHandle,$this->_cellCache[$pCoord]['sz']));
+		//	Re-attach the parent worksheet
+		$this->_currentObject->attach($this->_parent);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	/**
+	 *	Clone the cell collection
+	 *
+	 *	@return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		parent::copyCellCollection($parent);
+		//	Get a new id for the new file name
+		$baseUnique = $this->_getUniqueID();
+		$newFileName = PHPExcel_Shared_File::sys_get_temp_dir().'/PHPExcel.'.$baseUnique.'.cache';
+		//	Copy the existing cell cache file
+		copy ($this->_fileName,$newFileName);
+		$this->_fileName = $newFileName;
+		//	Open the copied cell cache file
+		$this->_fileHandle = fopen($this->_fileName,'a+');
+	}	//	function copyCellCollection()
+
+
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+
+		//	Close down the temporary cache file
+		$this->__destruct();
+	}	//	function unsetWorksheetCells()
+
+
+	public function __construct(PHPExcel_Worksheet $parent) {
+		parent::__construct($parent);
+		if (is_null($this->_fileHandle)) {
+			$baseUnique = $this->_getUniqueID();
+			$this->_fileName = PHPExcel_Shared_File::sys_get_temp_dir().'/PHPExcel.'.$baseUnique.'.cache';
+			$this->_fileHandle = fopen($this->_fileName,'a+');
+		}
+	}	//	function __construct()
+
+
+	public function __destruct() {
+		if (!is_null($this->_fileHandle)) {
+			fclose($this->_fileHandle);
+			unlink($this->_fileName);
+		}
+		$this->_fileHandle = null;
+	}	//	function __destruct()
+
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_ICache
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+interface PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     *	Add or Update a cell in cache identified by coordinate address
+     *
+     *	@param	string			$pCoord		Coordinate address of the cell to update
+     *	@param	PHPExcel_Cell	$cell		Cell to update
+	 *	@return	void
+     *	@throws	Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell);
+
+    /**
+     *	Add or Update a cell in cache
+     *
+     *	@param	PHPExcel_Cell	$cell		Cell to update
+	 *	@return	void
+     *	@throws	Exception
+     */
+	public function updateCacheData(PHPExcel_Cell $cell);
+
+    /**
+     *	Fetch a cell from cache identified by coordinate address
+     *
+     *	@param	string			$pCoord		Coordinate address of the cell to retrieve
+     *	@return PHPExcel_Cell 	Cell that was found, or null if not found
+     *	@throws	Exception
+     */
+	public function getCacheData($pCoord);
+
+    /**
+     *	Delete a cell in cache identified by coordinate address
+     *
+     *	@param	string			$pCoord		Coordinate address of the cell to delete
+     *	@throws	Exception
+     */
+	public function deleteCacheData($pCoord);
+
+	/**
+	 *	Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+	 *
+	 *	@param	string		$pCoord		Coordinate address of the cell to check
+	 *	@return	void
+	 *	@return	boolean
+	 */
+	public function isDataSet($pCoord);
+
+	/**
+	 *	Get a list of all cell addresses currently held in cache
+	 *
+	 *	@return	array of string
+	 */
+	public function getCellList();
+
+	/**
+	 *	Get the list of all cell addresses currently held in cache sorted by column and row
+	 *
+	 *	@return	void
+	 */
+	public function getSortedCellList();
+
+	/**
+	 *	Clone the cell collection
+	 *
+	 *	@return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent);
+
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_Memcache
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_Memcache extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+	private $_cachePrefix = null;
+
+	private $_cacheTime = 600;
+
+	private $_memcache = null;
+
+
+	private function _storeData() {
+		$this->_currentObject->detach();
+
+		$obj = serialize($this->_currentObject);
+		if (!$this->_memcache->replace($this->_cachePrefix.$this->_currentObjectID.'.cache',$obj,NULL,$this->_cacheTime)) {
+			if (!$this->_memcache->add($this->_cachePrefix.$this->_currentObjectID.'.cache',$obj,NULL,$this->_cacheTime)) {
+				$this->__destruct();
+				throw new Exception('Failed to store cell '.$cellID.' in MemCache');
+			}
+		}
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     *	Add or Update a cell in cache identified by coordinate address
+     *
+     *	@param	string			$pCoord		Coordinate address of the cell to update
+     *	@param	PHPExcel_Cell	$cell		Cell to update
+	 *	@return	void
+     *	@throws	Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+		$this->_cellCache[$pCoord] = true;
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+	/**
+	 *	Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+	 *
+	 *	@param	string		$pCoord		Coordinate address of the cell to check
+	 *	@return	void
+	 *	@return	boolean
+	 */
+	public function isDataSet($pCoord) {
+		//	Check if the requested entry is the current object, or exists in the cache
+		if (parent::isDataSet($pCoord)) {
+			if ($this->_currentObjectID == $pCoord) {
+				return true;
+			}
+			//	Check if the requested entry still exists in Memcache
+			$success = $this->_memcache->get($this->_cachePrefix.$pCoord.'.cache');
+			if ($success === false) {
+				//	Entry no longer exists in Memcache, so clear it from the cache array
+				parent::deleteCacheData($pCoord);
+				throw new Exception('Cell entry '.$cellID.' no longer exists in MemCache');
+			}
+			return true;
+		}
+		return false;
+	}	//	function isDataSet()
+
+
+	/**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		if (parent::isDataSet($pCoord)) {
+			$obj = $this->_memcache->get($this->_cachePrefix.$pCoord.'.cache');
+			if ($obj === false) {
+				//	Entry no longer exists in Memcache, so clear it from the cache array
+				parent::deleteCacheData($pCoord);
+				throw new Exception('Cell entry '.$cellID.' no longer exists in MemCache');
+			}
+		} else {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = unserialize($obj);
+		//	Re-attach the parent worksheet
+		$this->_currentObject->attach($this->_parent);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+    /**
+     *	Delete a cell in cache identified by coordinate address
+     *
+     *	@param	string			$pCoord		Coordinate address of the cell to delete
+     *	@throws	Exception
+     */
+	public function deleteCacheData($pCoord) {
+		//	Delete the entry from Memcache
+		$this->_memcache->delete($this->_cachePrefix.$pCoord.'.cache');
+
+		//	Delete the entry from our cell address array
+		parent::deleteCacheData($pCoord);
+	}	//	function deleteCacheData()
+
+
+	/**
+	 *	Clone the cell collection
+	 *
+	 *	@return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		parent::copyCellCollection($parent);
+		//	Get a new id for the new file name
+		$baseUnique = $this->_getUniqueID();
+		$newCachePrefix = substr(md5($baseUnique),0,8).'.';
+		$cacheList = $this->getCellList();
+		foreach($cacheList as $cellID) {
+			if ($cellID != $this->_currentObjectID) {
+				$obj = $this->_memcache->get($this->_cachePrefix.$cellID.'.cache');
+				if ($obj === false) {
+					//	Entry no longer exists in Memcache, so clear it from the cache array
+					parent::deleteCacheData($cellID);
+					throw new Exception('Cell entry '.$cellID.' no longer exists in MemCache');
+				}
+				if (!$this->_memcache->add($newCachePrefix.$cellID.'.cache',$obj,NULL,$this->_cacheTime)) {
+					$this->__destruct();
+					throw new Exception('Failed to store cell '.$cellID.' in MemCache');
+				}
+			}
+		}
+		$this->_cachePrefix = $newCachePrefix;
+	}	//	function copyCellCollection()
+
+
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+
+		//	Flush the Memcache cache
+		$this->__destruct();
+
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+	}	//	function unsetWorksheetCells()
+
+
+	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
+		$memcacheServer	= (isset($arguments['memcacheServer']))	? $arguments['memcacheServer']	: 'localhost';
+		$memcachePort	= (isset($arguments['memcachePort']))	? $arguments['memcachePort']	: 11211;
+		$cacheTime		= (isset($arguments['cacheTime']))		? $arguments['cacheTime']		: 600;
+
+		if (is_null($this->_cachePrefix)) {
+			$baseUnique = $this->_getUniqueID();
+			$this->_cachePrefix = substr(md5($baseUnique),0,8).'.';
+
+			//	Set a new Memcache object and connect to the Memcache server
+			$this->_memcache = new Memcache();
+			if (!$this->_memcache->addServer($memcacheServer, $memcachePort, false, 50, 5, 5, true, array($this, 'failureCallback'))) {
+				throw new Exception('Could not connect to MemCache server at '.$memcacheServer.':'.$memcachePort);
+			}
+			$this->_cacheTime = $cacheTime;
+
+			parent::__construct($parent);
+		}
+	}	//	function __construct()
+
+
+	public function failureCallback($host, $port) {
+		throw new Exception('memcache '.$host.':'.$port.' failed');
+	}
+
+
+	public function __destruct() {
+		$cacheList = $this->getCellList();
+		foreach($cacheList as $cellID) {
+			$this->_memcache->delete($this->_cachePrefix.$cellID.'.cache');
+		}
+	}	//	function __destruct()
+
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_Memory
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_Memory extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+    /**
+     *	Add or Update a cell in cache identified by coordinate address
+     *
+     *	@param	string			$pCoord		Coordinate address of the cell to update
+     *	@param	PHPExcel_Cell	$cell		Cell to update
+	 *	@return	void
+     *	@throws	Exception
+     */
+	public function addCacheData($pCoord, Tz\Wordpress\Tools\ExcelWriter\PHPExcel_Cell $cell) {
+		$this->_cellCache[$pCoord] = $cell;
+		return $cell;
+	}	//	function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		//	Check if the entry that has been requested actually exists
+		if (!isset($this->_cellCache[$pCoord])) {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Return requested entry
+		return $this->_cellCache[$pCoord];
+	}	//	function getCacheData()
+
+
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		parent::copyCellCollection($parent);
+
+		$newCollection = array();
+		foreach($this->_cellCache as $k => &$cell) {
+			$newCollection[$k] = clone $cell;
+			$newCollection[$k]->attach($parent);
+		}
+
+		$this->_cellCache = $newCollection;
+	}
+
+
+	public function unsetWorksheetCells() {
+		//	Because cells are all stored as intact objects in memory, we need to detach each one from the parent
+		foreach($this->_cellCache as $k => &$cell) {
+			$cell->detach();
+			$this->_cellCache[$k] = null;
+		}
+		unset($cell);
+
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+	}	//	function unsetWorksheetCells()
+
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_MemoryGZip
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_MemoryGZip extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+	private function _storeData() {
+		$this->_currentObject->detach();
+
+		$this->_cellCache[$this->_currentObjectID] = gzdeflate(serialize($this->_currentObject));
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     *	Add or Update a cell in cache identified by coordinate address
+     *
+     *	@param	string			$pCoord		Coordinate address of the cell to update
+     *	@param	PHPExcel_Cell	$cell		Cell to update
+	 *	@return	void
+     *	@throws	Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		if (!isset($this->_cellCache[$pCoord])) {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = unserialize(gzinflate($this->_cellCache[$pCoord]));
+		//	Re-attach the parent worksheet
+		$this->_currentObject->attach($this->_parent);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+	}	//	function unsetWorksheetCells()
+
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_MemorySerialized
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_MemorySerialized extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+	private function _storeData() {
+		$this->_currentObject->detach();
+
+		$this->_cellCache[$this->_currentObjectID] = serialize($this->_currentObject);
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     *	Add or Update a cell in cache identified by coordinate address
+     *
+     *	@param	string			$pCoord		Coordinate address of the cell to update
+     *	@param	PHPExcel_Cell	$cell		Cell to update
+	 *	@return	void
+     *	@throws	Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		if (!isset($this->_cellCache[$pCoord])) {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = unserialize($this->_cellCache[$pCoord]);
+		//	Re-attach the parent worksheet
+		$this->_currentObject->attach($this->_parent);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+	}	//	function unsetWorksheetCells()
+
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_PHPTemp
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_PHPTemp extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+	private $_fileHandle = null;
+
+
+	private $_memoryCacheSize = null;
+
+	private function _storeData() {
+		$this->_currentObject->detach();
+
+		fseek($this->_fileHandle,0,SEEK_END);
+		$offset = ftell($this->_fileHandle);
+		fwrite($this->_fileHandle, serialize($this->_currentObject));
+		$this->_cellCache[$this->_currentObjectID]	= array('ptr' => $offset,
+															'sz'  => ftell($this->_fileHandle) - $offset
+														   );
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     *	Add or Update a cell in cache identified by coordinate address
+     *
+     *	@param	string			$pCoord		Coordinate address of the cell to update
+     *	@param	PHPExcel_Cell	$cell		Cell to update
+	 *	@return	void
+     *	@throws	Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		if (!isset($this->_cellCache[$pCoord])) {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		fseek($this->_fileHandle,$this->_cellCache[$pCoord]['ptr']);
+		$this->_currentObject = unserialize(fread($this->_fileHandle,$this->_cellCache[$pCoord]['sz']));
+		//	Re-attach the parent worksheet
+		$this->_currentObject->attach($this->_parent);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	/**
+	 *	Clone the cell collection
+	 *
+	 *	@return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		parent::copyCellCollection($parent);
+		//	Open a new stream for the cell cache data
+		$newFileHandle = fopen('php://temp/maxmemory:'.$this->_memoryCacheSize,'a+');
+		//	Copy the existing cell cache data to the new stream
+		fseek($this->_fileHandle,0);
+		while (!feof($this->_fileHandle)) {
+			fwrite($newFileHandle,fread($this->_fileHandle, 1024));
+		}
+		$this->_fileHandle = $newFileHandle;
+	}	//	function copyCellCollection()
+
+
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+
+		//	Close down the php://temp file
+		$this->__destruct();
+	}	//	function unsetWorksheetCells()
+
+
+	public function __construct(PHPExcel_Worksheet $parent, $memoryCacheSize = '1MB') {
+		$this->_memoryCacheSize	= (isset($arguments['memoryCacheSize']))	? $arguments['memoryCacheSize']	: '1MB';
+
+		parent::__construct($parent);
+		if (is_null($this->_fileHandle)) {
+			$this->_fileHandle = fopen('php://temp/maxmemory:'.$this->_memoryCacheSize,'a+');
+		}
+	}	//	function __construct()
+
+
+	public function __destruct() {
+		if (!is_null($this->_fileHandle)) {
+			fclose($this->_fileHandle);
+		}
+		$this->_fileHandle = null;
+	}	//	function __destruct()
+
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package	PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_Wincache
+ *
+ * @category   PHPExcel
+ * @package	PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_Wincache extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+	private $_cachePrefix = null;
+
+	private $_cacheTime = 600;
+
+
+	private function _storeData() {
+		$this->_currentObject->detach();
+
+		$obj = serialize($this->_currentObject);
+		if (wincache_ucache_exists($this->_cachePrefix.$this->_currentObjectID.'.cache')) {
+			if (!wincache_ucache_set($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
+				$this->__destruct();
+				throw new Exception('Failed to store cell '.$cellID.' in WinCache');
+			}
+		} else {
+			if (!wincache_ucache_add($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
+				$this->__destruct();
+				throw new Exception('Failed to store cell '.$cellID.' in WinCache');
+			}
+		}
+
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+	/**
+	 *	Add or Update a cell in cache identified by coordinate address
+	 *
+	 *	@param	string			$pCoord		Coordinate address of the cell to update
+	 *	@param	PHPExcel_Cell	$cell		Cell to update
+	 *	@return	void
+	 *	@throws	Exception
+	 */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+		$this->_cellCache[$pCoord] = true;
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+	/**
+	 *	Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+	 *
+	 *	@param	string		$pCoord		Coordinate address of the cell to check
+	 *	@return	void
+	 *	@return	boolean
+	 */
+	public function isDataSet($pCoord) {
+		//	Check if the requested entry is the current object, or exists in the cache
+		if (parent::isDataSet($pCoord)) {
+			if ($this->_currentObjectID == $pCoord) {
+				return true;
+			}
+			//	Check if the requested entry still exists in cache
+			$success = wincache_ucache_exists($this->_cachePrefix.$pCoord.'.cache');
+			if ($success === false) {
+				//	Entry no longer exists in Wincache, so clear it from the cache array
+				parent::deleteCacheData($pCoord);
+				throw new Exception('Cell entry '.$cellID.' no longer exists in WinCache');
+			}
+			return true;
+		}
+		return false;
+	}	//	function isDataSet()
+
+
+	/**
+	 * Get cell at a specific coordinate
+	 *
+	 * @param	string			$pCoord		Coordinate of the cell
+	 * @throws	Exception
+	 * @return	PHPExcel_Cell	Cell that was found, or null if not found
+	 */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		$obj = null;
+		if (parent::isDataSet($pCoord)) {
+			$success = false;
+			$obj = wincache_ucache_get($this->_cachePrefix.$pCoord.'.cache', $success);
+			if ($success === false) {
+				//	Entry no longer exists in WinCache, so clear it from the cache array
+				parent::deleteCacheData($pCoord);
+				throw new Exception('Cell entry '.$cellID.' no longer exists in WinCache');
+			}
+		} else {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = unserialize($obj);
+		//	Re-attach the parent worksheet
+		$this->_currentObject->attach($this->_parent);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	/**
+	 *	Delete a cell in cache identified by coordinate address
+	 *
+	 *	@param	string			$pCoord		Coordinate address of the cell to delete
+	 *	@throws	Exception
+	 */
+	public function deleteCacheData($pCoord) {
+		//	Delete the entry from Wincache
+		wincache_ucache_delete($this->_cachePrefix.$pCoord.'.cache');
+
+		//	Delete the entry from our cell address array
+		parent::deleteCacheData($pCoord);
+	}	//	function deleteCacheData()
+
+
+	/**
+	 *	Clone the cell collection
+	 *
+	 *	@return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		parent::copyCellCollection($parent);
+		//	Get a new id for the new file name
+		$baseUnique = $this->_getUniqueID();
+		$newCachePrefix = substr(md5($baseUnique),0,8).'.';
+		$cacheList = $this->getCellList();
+		foreach($cacheList as $cellID) {
+			if ($cellID != $this->_currentObjectID) {
+				$success = false;
+				$obj = wincache_ucache_get($this->_cachePrefix.$cellID.'.cache', $success);
+				if ($success === false) {
+					//	Entry no longer exists in WinCache, so clear it from the cache array
+					parent::deleteCacheData($cellID);
+					throw new Exception('Cell entry '.$cellID.' no longer exists in Wincache');
+				}
+				if (!wincache_ucache_add($newCachePrefix.$cellID.'.cache', $obj, $this->_cacheTime)) {
+					$this->__destruct();
+					throw new Exception('Failed to store cell '.$cellID.' in Wincache');
+				}
+			}
+		}
+		$this->_cachePrefix = $newCachePrefix;
+	}	//	function copyCellCollection()
+
+
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+
+		//	Flush the WinCache cache
+		$this->__destruct();
+
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+	}	//	function unsetWorksheetCells()
+
+
+	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
+		$cacheTime	= (isset($arguments['cacheTime']))	? $arguments['cacheTime']	: 600;
+
+		if (is_null($this->_cachePrefix)) {
+			$baseUnique = $this->_getUniqueID();
+			$this->_cachePrefix = substr(md5($baseUnique),0,8).'.';
+			$this->_cacheTime = $cacheTime;
+
+			parent::__construct($parent);
+		}
+	}	//	function __construct()
+
+
+	public function __destruct() {
+		$cacheList = $this->getCellList();
+		foreach($cacheList as $cellID) {
+			wincache_ucache_delete($this->_cachePrefix.$cellID.'.cache');
+		}
+	}	//	function __destruct()
+
+}

+<?php
+namespace Tz\Wordpress\Tools\ExcelWriter;
+
+class PHPExcel_CachedObjectStorageFactory {
+	const cache_in_memory				= 'Memory';
+	const cache_in_memory_gzip			= 'MemoryGZip';
+	const cache_in_memory_serialized	= 'MemorySerialized';
+	const cache_to_discISAM				= 'DiscISAM';
+	const cache_to_apc					= 'APC';
+	const cache_to_memcache				= 'Memcache';
+	const cache_to_phpTemp				= 'PHPTemp';
+	const cache_to_wincache				= 'Wincache';
+
+
+	private static $_cacheStorageMethod = null;
+
+	private static $_cacheStorageClass = null;
+
+
+	private static $_storageMethods = array(
+		self::cache_in_memory,
+		self::cache_in_memory_gzip,
+		self::cache_in_memory_serialized,
+		self::cache_to_phpTemp,
+		self::cache_to_discISAM,
+		self::cache_to_apc,
+		self::cache_to_memcache,
+		self::cache_to_wincache,
+	);
+
+
+	private static $_storageMethodDefaultParameters = array(
+		self::cache_in_memory				=> array(
+													),
+		self::cache_in_memory_gzip			=> array(
+													),
+		self::cache_in_memory_serialized	=> array(
+													),
+		self::cache_to_phpTemp				=> array( 'memoryCacheSize'	=> '1MB'
+													),
+		self::cache_to_discISAM				=> array(
+													),
+		self::cache_to_apc					=> array( 'cacheTime'		=> 600
+													),
+		self::cache_to_memcache				=> array( 'memcacheServer'	=> 'localhost',
+													  'memcachePort'	=> 11211,
+													  'cacheTime'		=> 600
+													),
+		self::cache_to_wincache				=> array( 'cacheTime'		=> 600
+													)
+	);
+
+
+	private static $_storageMethodParameters = array();
+
+
+	public static function getCacheStorageMethod() {
+		if (!is_null(self::$_cacheStorageMethod)) {
+			return self::$_cacheStorageMethod;
+		}
+		return null;
+	}	//	function getCacheStorageMethod()
+
+
+	public static function getCacheStorageClass() {
+		if (!is_null(self::$_cacheStorageClass)) {
+			return self::$_cacheStorageClass;
+		}
+		return null;
+	}	//	function getCacheStorageClass()
+
+
+	public static function getCacheStorageMethods() {
+		return self::$_storageMethods;
+	}	//	function getCacheStorageMethods()
+
+
+	public static function initialize($method = self::cache_in_memory, $arguments = array()) {
+		if (!in_array($method,self::$_storageMethods)) {
+			return false;
+		}
+
+		switch($method) {
+			case self::cache_to_apc	:
+				if (!function_exists('apc_store')) {
+					return false;
+				}
+				if (apc_sma_info() === false) {
+					return false;
+				}
+				break;
+			case self::cache_to_memcache :
+				if (!function_exists('memcache_add')) {
+					return false;
+				}
+				break;
+			case self::cache_to_wincache :
+				if (!function_exists('wincache_ucache_add')) {
+					return false;
+				}
+				break;
+		}
+
+		self::$_storageMethodParameters[$method] = self::$_storageMethodDefaultParameters[$method];
+		foreach($arguments as $k => $v) {
+			if (isset(self::$_storageMethodParameters[$method][$k])) {
+				self::$_storageMethodParameters[$method][$k] = $v;
+			}
+		}
+
+		if (is_null(self::$_cacheStorageMethod)) {
+			self::$_cacheStorageClass = 'PHPExcel_CachedObjectStorage_'.$method;
+			self::$_cacheStorageMethod = $method;
+		}
+		return true;
+	}	//	function initialize()
+
+
+	public static function getInstance(PHPExcel_Worksheet $parent) {
+		if (is_null(self::$_cacheStorageMethod)) {
+			self::initialize();
+		}
+
+		$instance = new self::$_cacheStorageClass($parent,self::$_storageMethodParameters[self::$_cacheStorageMethod]);
+		if (!is_null($instance)) {
+			return $instance;
+		}
+
+		return false;
+	}	//	function getInstance()
+
+}
\ No newline at end of file

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_Calculation_Exception
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_Exception extends Exception {
+	/**
+	 * Error handler callback
+	 *
+	 * @param mixed $code
+	 * @param mixed $string
+	 * @param mixed $file
+	 * @param mixed $line
+	 * @param mixed $context
+	 */
+	public static function errorHandlerCallback($code, $string, $file, $line, $context) {
+		$e = new self($string, $code);
+		$e->line = $line;
+		$e->file = $file;
+		throw $e;
+	}	
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	1.7.6, 2011-02-27
+ */
+
+/**
+ * PHPExcel_Calculation_ExceptionHandler
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_ExceptionHandler {
+	/**
+	 * Register errorhandler
+	 */
+	public function __construct() {
+		set_error_handler(array('PHPExcel_Calculation_Exception', 'errorHandlerCallback'), E_ALL);
+	}
+
+	/**
+	 * Unregister errorhandler
+	 */
+	public function __destruct() {
+		restore_error_handler();
+	}
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/*
+PARTLY BASED ON:
+	Copyright (c) 2007 E. W. Bachtal, Inc.
+
+	Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+	and associated documentation files (the "Software"), to deal in the Software without restriction,
+	including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+	and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+	subject to the following conditions:
+
+	  The above copyright notice and this permission notice shall be included in all copies or substantial
+	  portions of the Software.
+
+	The software is provided "as is", without warranty of any kind, express or implied, including but not
+	limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In
+	no event shall the authors or copyright holders be liable for any claim, damages or other liability,
+	whether in an action of contract, tort or otherwise, arising from, out of or in connection with the
+	software or the use or other dealings in the software.
+
+	http://ewbi.blogs.com/develops/2007/03/excel_formula_p.html
+	http://ewbi.blogs.com/develops/2004/12/excel_formula_p.html
+*/
+
+
+/**
+ * PHPExcel_Calculation_FormulaToken
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_FormulaToken {
+	/* Token types */
+	const TOKEN_TYPE_NOOP					= 'Noop';
+	const TOKEN_TYPE_OPERAND				= 'Operand';
+	const TOKEN_TYPE_FUNCTION				= 'Function';
+	const TOKEN_TYPE_SUBEXPRESSION			= 'Subexpression';
+	const TOKEN_TYPE_ARGUMENT				= 'Argument';
+	const TOKEN_TYPE_OPERATORPREFIX			= 'OperatorPrefix';
+	const TOKEN_TYPE_OPERATORINFIX			= 'OperatorInfix';
+	const TOKEN_TYPE_OPERATORPOSTFIX		= 'OperatorPostfix';
+	const TOKEN_TYPE_WHITESPACE				= 'Whitespace';
+	const TOKEN_TYPE_UNKNOWN				= 'Unknown';
+
+	/* Token subtypes */
+	const TOKEN_SUBTYPE_NOTHING				= 'Nothing';
+	const TOKEN_SUBTYPE_START				= 'Start';
+	const TOKEN_SUBTYPE_STOP				= 'Stop';
+	const TOKEN_SUBTYPE_TEXT				= 'Text';
+	const TOKEN_SUBTYPE_NUMBER				= 'Number';
+	const TOKEN_SUBTYPE_LOGICAL				= 'Logical';
+	const TOKEN_SUBTYPE_ERROR				= 'Error';
+	const TOKEN_SUBTYPE_RANGE				= 'Range';
+	const TOKEN_SUBTYPE_MATH				= 'Math';
+	const TOKEN_SUBTYPE_CONCATENATION		= 'Concatenation';
+	const TOKEN_SUBTYPE_INTERSECTION		= 'Intersection';
+	const TOKEN_SUBTYPE_UNION				= 'Union';
+
+	/**
+	 * Value
+	 *
+	 * @var string
+	 */
+	private $_value;
+
+	/**
+	 * Token Type (represented by TOKEN_TYPE_*)
+	 *
+	 * @var string
+	 */
+	private $_tokenType;
+
+	/**
+	 * Token SubType (represented by TOKEN_SUBTYPE_*)
+	 *
+	 * @var string
+	 */
+	private $_tokenSubType;
+
+    /**
+     * Create a new PHPExcel_Calculation_FormulaToken
+     *
+     * @param string	$pValue
+     * @param string	$pTokenType 	Token type (represented by TOKEN_TYPE_*)
+     * @param string	$pTokenSubType 	Token Subtype (represented by TOKEN_SUBTYPE_*)
+     */
+    public function __construct($pValue, $pTokenType = PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN, $pTokenSubType = PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_NOTHING)
+    {
+    	// Initialise values
+    	$this->_value				= $pValue;
+    	$this->_tokenType			= $pTokenType;
+    	$this->_tokenSubType 		= $pTokenSubType;
+    }
+
+    /**
+     * Get Value
+     *
+     * @return string
+     */
+    public function getValue() {
+    	return $this->_value;
+    }
+
+    /**
+     * Set Value
+     *
+     * @param string	$value
+     */
+    public function setValue($value) {
+    	$this->_value = $value;
+    }
+
+    /**
+     * Get Token Type (represented by TOKEN_TYPE_*)
+     *
+     * @return string
+     */
+    public function getTokenType() {
+    	return $this->_tokenType;
+    }
+
+    /**
+     * Set Token Type
+     *
+     * @param string	$value
+     */
+    public function setTokenType($value = PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN) {
+    	$this->_tokenType = $value;
+    }
+
+    /**
+     * Get Token SubType (represented by TOKEN_SUBTYPE_*)
+     *
+     * @return string
+     */
+    public function getTokenSubType() {
+    	return $this->_tokenSubType;
+    }
+
+    /**
+     * Set Token SubType
+     *
+     * @param string	$value
+     */
+    public function setTokenSubType($value = PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_NOTHING) {
+    	$this->_tokenSubType = $value;
+    }
+}

+<?php
+namespace Tz\Wordpress\Tools\ExcelWriter;
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_Calculation_Function
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_Function {
+	/* Function categories */
+	const CATEGORY_CUBE						= 'Cube';
+	const CATEGORY_DATABASE					= 'Database';
+	const CATEGORY_DATE_AND_TIME			= 'Date and Time';
+	const CATEGORY_ENGINEERING				= 'Engineering';
+	const CATEGORY_FINANCIAL				= 'Financial';
+	const CATEGORY_INFORMATION				= 'Information';
+	const CATEGORY_LOGICAL					= 'Logical';
+	const CATEGORY_LOOKUP_AND_REFERENCE		= 'Lookup and Reference';
+	const CATEGORY_MATH_AND_TRIG			= 'Math and Trig';
+	const CATEGORY_STATISTICAL				= 'Statistical';
+	const CATEGORY_TEXT_AND_DATA			= 'Text and Data';
+
+	/**
+	 * Category (represented by CATEGORY_*)
+	 *
+	 * @var string
+	 */
+	private $_category;
+
+	/**
+	 * Excel name
+	 *
+	 * @var string
+	 */
+	private $_excelName;
+
+	/**
+	 * PHPExcel name
+	 *
+	 * @var string
+	 */
+	private $_phpExcelName;
+
+    /**
+     * Create a new PHPExcel_Calculation_Function
+     *
+     * @param 	string		$pCategory 		Category (represented by CATEGORY_*)
+     * @param 	string		$pExcelName		Excel function name
+     * @param 	string		$pPHPExcelName	PHPExcel function mapping
+     * @throws 	Exception
+     */
+    public function __construct($pCategory = null, $pExcelName = null, $pPHPExcelName = null)
+    {
+    	if (!is_null($pCategory) && !is_null($pExcelName) && !is_null($pPHPExcelName)) {
+    		// Initialise values
+    		$this->_category 		= $pCategory;
+    		$this->_excelName 		= $pExcelName;
+    		$this->_phpExcelName 	= $pPHPExcelName;
+    	} else {
+    		throw new Exception("Invalid parameters passed.");
+    	}
+    }
+
+    /**
+     * Get Category (represented by CATEGORY_*)
+     *
+     * @return string
+     */
+    public function getCategory() {
+    	return $this->_category;
+    }
+
+    /**
+     * Set Category (represented by CATEGORY_*)
+     *
+     * @param 	string		$value
+     * @throws 	Exception
+     */
+    public function setCategory($value = null) {
+    	if (!is_null($value)) {
+    		$this->_category = $value;
+    	} else {
+    		throw new Exception("Invalid parameter passed.");
+    	}
+    }
+
+    /**
+     * Get Excel name
+     *
+     * @return string
+     */
+    public function getExcelName() {
+    	return $this->_excelName;
+    }
+
+    /**
+     * Set Excel name
+     *
+     * @param string	$value
+     */
+    public function setExcelName($value) {
+    	$this->_excelName = $value;
+    }
+
+    /**
+     * Get PHPExcel name
+     *
+     * @return string
+     */
+    public function getPHPExcelName() {
+    	return $this->_phpExcelName;
+    }
+
+    /**
+     * Set PHPExcel name
+     *
+     * @param string	$value
+     */
+    public function setPHPExcelName($value) {
+    	$this->_phpExcelName = $value;
+    }
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		1.7.6, 2011-02-27
+ */
+
+
+/** PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+	/**
+	 * @ignore
+	 */
+	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
+	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+}
+
+
+/**
+ * PHPExcel_Calculation_Logical
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_Logical {
+
+	/**
+	 *	TRUE
+	 *
+	 *	Returns the boolean TRUE.
+	 *
+	 *	Excel Function:
+	 *		=TRUE()
+	 *
+	 *	@access	public
+	 *	@category Logical Functions
+	 *	@return	boolean		True
+	 */
+	public static function TRUE() {
+		return true;
+	}	//	function TRUE()
+
+
+	/**
+	 *	FALSE
+	 *
+	 *	Returns the boolean FALSE.
+	 *
+	 *	Excel Function:
+	 *		=FALSE()
+	 *
+	 *	@access	public
+	 *	@category Logical Functions
+	 *	@return	boolean		False
+	 */
+	public static function FALSE() {
+		return false;
+	}	//	function FALSE()
+
+
+	/**
+	 *	LOGICAL_AND
+	 *
+	 *	Returns boolean TRUE if all its arguments are TRUE; returns FALSE if one or more argument is FALSE.
+	 *
+	 *	Excel Function:
+	 *		=AND(logical1[,logical2[, ...]])
+	 *
+	 *		The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays
+	 *			or references that contain logical values.
+	 *
+	 *		Boolean arguments are treated as True or False as appropriate
+	 *		Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
+	 *		If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
+	 *			the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
+	 *
+	 *	@access	public
+	 *	@category Logical Functions
+	 *	@param	mixed		$arg,...		Data values
+	 *	@return	boolean		The logical AND of the arguments.
+	 */
+	public static function LOGICAL_AND() {
+		// Return value
+		$returnValue = True;
+
+		// Loop through the arguments
+		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());
+		$argCount = 0;
+		foreach ($aArgs as $arg) {
+			// Is it a boolean value?
+			if (is_bool($arg)) {
+				$returnValue = $returnValue && $arg;
+			} elseif ((is_numeric($arg)) && (!is_string($arg))) {
+				$returnValue = $returnValue && ($arg != 0);
+			} elseif (is_string($arg)) {
+				$arg = strtoupper($arg);
+				if (($arg == 'TRUE') || ($arg == PHPExcel_Calculation::getTRUE())) {
+					$arg = true;
+				} elseif (($arg == 'FALSE') || ($arg == PHPExcel_Calculation::getFALSE())) {
+					$arg = false;
+				} else {
+					return PHPExcel_Calculation_Functions::VALUE();
+				}
+				$returnValue = $returnValue && ($arg != 0);
+			}
+			++$argCount;
+		}
+
+		// Return
+		if ($argCount == 0) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+		return $returnValue;
+	}	//	function LOGICAL_AND()
+
+
+	/**
+	 *	LOGICAL_OR
+	 *
+	 *	Returns boolean TRUE if any argument is TRUE; returns FALSE if all arguments are FALSE.
+	 *
+	 *	Excel Function:
+	 *		=OR(logical1[,logical2[, ...]])
+	 *
+	 *		The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays
+	 *			or references that contain logical values.
+	 *
+	 *		Boolean arguments are treated as True or False as appropriate
+	 *		Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
+	 *		If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
+	 *			the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
+	 *
+	 *	@access	public
+	 *	@category Logical Functions
+	 *	@param	mixed		$arg,...		Data values
+	 *	@return	boolean		The logical OR of the arguments.
+	 */
+	public static function LOGICAL_OR() {
+		// Return value
+		$returnValue = False;
+
+		// Loop through the arguments
+		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());
+		$argCount = 0;
+		foreach ($aArgs as $arg) {
+			// Is it a boolean value?
+			if (is_bool($arg)) {
+				$returnValue = $returnValue || $arg;
+			} elseif ((is_numeric($arg)) && (!is_string($arg))) {
+				$returnValue = $returnValue || ($arg != 0);
+			} elseif (is_string($arg)) {
+				$arg = strtoupper($arg);
+				if (($arg == 'TRUE') || ($arg == PHPExcel_Calculation::getTRUE())) {
+					$arg = true;
+				} elseif (($arg == 'FALSE') || ($arg == PHPExcel_Calculation::getFALSE())) {
+					$arg = false;
+				} else {
+					return PHPExcel_Calculation_Functions::VALUE();
+				}
+				$returnValue = $returnValue || ($arg != 0);
+			}
+			++$argCount;
+		}
+
+		// Return
+		if ($argCount == 0) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+		return $returnValue;
+	}	//	function LOGICAL_OR()
+
+
+	/**
+	 *	NOT
+	 *
+	 *	Returns the boolean inverse of the argument.
+	 *
+	 *	Excel Function:
+	 *		=NOT(logical)
+	 *
+	 *		The argument must evaluate to a logical value such as TRUE or FALSE
+	 *
+	 *		Boolean arguments are treated as True or False as appropriate
+	 *		Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
+	 *		If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
+	 *			the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
+	 *
+	 *	@access	public
+	 *	@category Logical Functions
+	 *	@param	mixed		$logical	A value or expression that can be evaluated to TRUE or FALSE
+	 *	@return	boolean		The boolean inverse of the argument.
+	 */
+	public static function NOT($logical) {
+		$logical = PHPExcel_Calculation_Functions::flattenSingleValue($logical);
+		if (is_string($logical)) {
+			$logical = strtoupper($logical);
+			if (($logical == 'TRUE') || ($logical == PHPExcel_Calculation::getTRUE())) {
+				return false;
+			} elseif (($logical == 'FALSE') || ($logical == PHPExcel_Calculation::getFALSE())) {
+				return true;
+			} else {
+				return PHPExcel_Calculation_Functions::VALUE();
+			}
+		}
+
+		return !$logical;
+	}	//	function NOT()
+
+	/**
+	 *	STATEMENT_IF
+	 *
+	 *	Returns one value if a condition you specify evaluates to TRUE and another value if it evaluates to FALSE.
+	 *
+	 *	Excel Function:
+	 *		=IF(condition[,returnIfTrue[,returnIfFalse]])
+	 *
+	 *		Condition is any value or expression that can be evaluated to TRUE or FALSE.
+	 *			For example, A10=100 is a logical expression; if the value in cell A10 is equal to 100,
+	 *			the expression evaluates to TRUE. Otherwise, the expression evaluates to FALSE.
+	 *			This argument can use any comparison calculation operator.
+	 *		ReturnIfTrue is the value that is returned if condition evaluates to TRUE.
+	 *			For example, if this argument is the text string "Within budget" and the condition argument evaluates to TRUE,
+	 *			then the IF function returns the text "Within budget"
+	 *			If condition is TRUE and ReturnIfTrue is blank, this argument returns 0 (zero). To display the word TRUE, use
+	 *			the logical value TRUE for this argument.
+	 *			ReturnIfTrue can be another formula.
+	 *		ReturnIfFalse is the value that is returned if condition evaluates to FALSE.
+	 *			For example, if this argument is the text string "Over budget" and the condition argument evaluates to FALSE,
+	 *			then the IF function returns the text "Over budget".
+	 *			If condition is FALSE and ReturnIfFalse is omitted, then the logical value FALSE is returned.
+	 *			If condition is FALSE and ReturnIfFalse is blank, then the value 0 (zero) is returned.
+	 *			ReturnIfFalse can be another formula.
+	 *
+	 *	@access	public
+	 *	@category Logical Functions
+	 *	@param	mixed	$condition		Condition to evaluate
+	 *	@param	mixed	$returnIfTrue	Value to return when condition is true
+	 *	@param	mixed	$returnIfFalse	Optional value to return when condition is false
+	 *	@return	mixed	The value of returnIfTrue or returnIfFalse determined by condition
+	 */
+	public static function STATEMENT_IF($condition = true, $returnIfTrue = 0, $returnIfFalse = False) {
+		$condition		= (is_null($condition))		? True :	(boolean) PHPExcel_Calculation_Functions::flattenSingleValue($condition);
+		$returnIfTrue	= (is_null($returnIfTrue))	? 0 :		PHPExcel_Calculation_Functions::flattenSingleValue($returnIfTrue);
+		$returnIfFalse	= (is_null($returnIfFalse))	? False :	PHPExcel_Calculation_Functions::flattenSingleValue($returnIfFalse);
+
+		return ($condition ? $returnIfTrue : $returnIfFalse);
+	}	//	function STATEMENT_IF()
+
+
+	/**
+	 *	IFERROR
+	 *
+	 *	Excel Function:
+	 *		=IFERROR(testValue,errorpart)
+	 *
+	 *	@access	public
+	 *	@category Logical Functions
+	 *	@param	mixed	$testValue	Value to check, is also the value returned when no error
+	 *	@param	mixed	$errorpart	Value to return when testValue is an error condition
+	 *	@return	mixed	The value of errorpart or testValue determined by error condition
+	 */
+	public static function IFERROR($testValue = '', $errorpart = '') {
+		$testValue	= (is_null($testValue))	? '' :	PHPExcel_Calculation_Functions::flattenSingleValue($testValue);
+		$errorpart	= (is_null($errorpart))	? '' :	PHPExcel_Calculation_Functions::flattenSingleValue($errorpart);
+
+		return self::STATEMENT_IF(PHPExcel_Calculation_Functions::IS_ERROR($testValue), $errorpart, $testValue);
+	}	//	function IFERROR()
+
+}	//	class PHPExcel_Calculation_Logical

+ABS
+ACCRINT
+ACCRINTM
+ACOS
+ACOSH
+ADDRESS
+AMORDEGRC
+AMORLINC
+AND
+AREAS
+ASC
+ASIN
+ASINH
+ATAN
+ATAN2
+ATANH
+AVEDEV
+AVERAGE
+AVERAGEA
+AVERAGEIF
+AVERAGEIFS
+BAHTTEXT
+BESSELI
+BESSELJ
+BESSELK
+BESSELY
+BETADIST
+BETAINV
+BIN2DEC
+BIN2HEX
+BIN2OCT
+BINOMDIST
+CEILING
+CELL
+CHAR
+CHIDIST
+CHIINV
+CHITEST
+CHOOSE
+CLEAN
+CODE
+COLUMN
+COLUMNS
+COMBIN
+COMPLEX
+CONCATENATE
+CONFIDENCE
+CONVERT
+CORREL
+COS
+COSH
+COUNT
+COUNTA
+COUNTBLANK
+COUNTIF
+COUNTIFS
+COUPDAYBS
+COUPDAYBS
+COUPDAYSNC
+COUPNCD
+COUPNUM
+COUPPCD
+COVAR
+CRITBINOM
+CUBEKPIMEMBER
+CUBEMEMBER
+CUBEMEMBERPROPERTY
+CUBERANKEDMEMBER
+CUBESET
+CUBESETCOUNT
+CUBEVALUE
+CUMIPMT
+CUMPRINC
+DATE
+DATEDIF
+DATEVALUE
+DAVERAGE
+DAY
+DAYS360
+DB
+DCOUNT
+DCOUNTA
+DDB
+DEC2BIN
+DEC2HEX
+DEC2OCT
+DEGREES
+DELTA
+DEVSQ
+DGET
+DISC
+DMAX
+DMIN
+DOLLAR
+DOLLARDE
+DOLLARFR
+DPRODUCT
+DSTDEV
+DSTDEVP
+DSUM
+DURATION
+DVAR
+DVARP
+EDATE
+EFFECT
+EOMONTH
+ERF
+ERFC
+ERROR.TYPE
+EVEN
+EXACT
+EXP
+EXPONDIST
+FACT
+FACTDOUBLE
+FALSE
+FDIST
+FIND
+FINDB
+FINV
+FISHER
+FISHERINV
+FIXED
+FLOOR
+FORECAST
+FREQUENCY
+FTEST
+FV
+FVSCHEDULE
+GAMAMDIST
+GAMMAINV
+GAMMALN
+GCD
+GEOMEAN
+GESTEP
+GETPIVOTDATA
+GROWTH
+HARMEAN
+HEX2BIN
+HEX2OCT
+HLOOKUP
+HOUR
+HYPERLINK
+HYPGEOMDIST
+IF
+IFERROR
+IMABS
+IMAGINARY
+IMARGUMENT
+IMCONJUGATE
+IMCOS
+IMEXP
+IMLN
+IMLOG10
+IMLOG2
+IMPOWER
+IMPRODUCT
+IMREAL
+IMSIN
+IMSQRT
+IMSUB
+IMSUM
+INDEX
+INDIRECT
+INFO
+INT
+INTERCEPT
+INTRATE
+IPMT
+IRR
+ISBLANK
+ISERR
+ISERROR
+ISEVEN
+ISLOGICAL
+ISNA
+ISNONTEXT
+ISNUMBER
+ISODD
+ISPMT
+ISREF
+ISTEXT
+JIS
+KURT
+LARGE
+LCM
+LEFT
+LEFTB
+LEN
+LENB
+LINEST
+LN
+LOG
+LOG10
+LOGEST
+LOGINV
+LOGNORMDIST
+LOOKUP
+LOWER
+MATCH
+MAX
+MAXA
+MDETERM
+MDURATION
+MEDIAN
+MID
+MIDB
+MIN
+MINA
+MINUTE
+MINVERSE
+MIRR
+MMULT
+MOD
+MODE
+MONTH
+MROUND
+MULTINOMIAL
+N
+NA
+NEGBINOMDIST
+NETWORKDAYS
+NOMINAL
+NORMDIST
+NORMINV
+NORMSDIST
+NORMSINV
+NOT
+NOW
+NPER
+NPV
+OCT2BIN
+OCT2DEC
+OCT2HEX
+ODD
+ODDFPRICE
+ODDFYIELD
+ODDLPRICE
+ODDLYIELD
+OFFSET
+OR
+PEARSON
+PERCENTILE
+PERCENTRANK
+PERMUT
+PHONETIC
+PI
+PMT
+POISSON
+POWER
+PPMT
+PRICE
+PRICEDISC
+PRICEMAT
+PROB
+PRODUCT
+PROPER
+PV
+QUARTILE
+QUOTIENT
+RADIANS
+RAND
+RANDBETWEEN
+RANK
+RATE
+RECEIVED
+REPLACE
+REPLACEB
+REPT
+RIGHT
+RIGHTB
+ROMAN
+ROUND
+ROUNDDOWN
+ROUNDUP
+ROW
+ROWS
+RSQ
+RTD
+SEARCH
+SEARCHB
+SECOND
+SERIESSUM
+SIGN
+SIN
+SINH
+SKEW
+SLN
+SLOPE
+SMALL
+SQRT
+SQRTPI
+STANDARDIZE
+STDEV
+STDEVA
+STDEVP
+STDEVPA
+STEYX
+SUBSTITUTE
+SUBTOTAL
+SUM
+SUMIF
+SUMIFS
+SUMPRODUCT
+SUMSQ
+SUMX2MY2
+SUMX2PY2
+SUMXMY2
+SYD
+T
+TAN
+TANH
+TBILLEQ
+TBILLPRICE
+TBILLYIELD
+TDIST
+TEXT
+TIME
+TIMEVALUE
+TINV
+TODAY
+TRANSPOSE
+TREND
+TRIM
+TRIMMEAN
+TRUE
+TRUNC
+TTEST
+TYPE
+UPPER
+USDOLLAR
+VALUE
+VAR
+VARA
+VARP
+VARPA
+VDB
+VERSION
+VLOOKUP
+WEEKDAY
+WEEKNUM
+WEIBULL
+WORKDAY
+XIRR
+XNPV
+YEAR
+YEARFRAC
+YIELD
+YIELDDISC
+YIELDMAT
+ZTEST

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/** PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+	/**
+	 * @ignore
+	 */
+	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
+	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+}
+
+
+/**
+ * PHPExcel_Cell_AdvancedValueBinder
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Cell_AdvancedValueBinder extends PHPExcel_Cell_DefaultValueBinder implements PHPExcel_Cell_IValueBinder
+{
+	/**
+	 * Bind value to a cell
+	 *
+	 * @param PHPExcel_Cell $cell	Cell to bind value to
+	 * @param mixed $value			Value to bind in cell
+	 * @return boolean
+	 */
+	public function bindValue(PHPExcel_Cell $cell, $value = null)
+	{
+		// sanitize UTF-8 strings
+		if (is_string($value)) {
+			$value = PHPExcel_Shared_String::SanitizeUTF8($value);
+		}
+
+		// Find out data type
+		$dataType = parent::dataTypeForValue($value);
+
+		// Style logic - strings
+		if ($dataType === PHPExcel_Cell_DataType::TYPE_STRING && !$value instanceof PHPExcel_RichText) {
+			//	Test for booleans using locale-setting
+			if ($value == PHPExcel_Calculation::getTRUE()) {
+				$cell->setValueExplicit( True, PHPExcel_Cell_DataType::TYPE_BOOL);
+				return true;
+			} elseif($value == PHPExcel_Calculation::getFALSE()) {
+				$cell->setValueExplicit( False, PHPExcel_Cell_DataType::TYPE_BOOL);
+				return true;
+			}
+
+			// Check for number in scientific format
+			if (preg_match('/^'.PHPExcel_Calculation::CALCULATION_REGEXP_NUMBER.'$/', $value)) {
+				$cell->setValueExplicit( (float) $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+				return true;
+			}
+
+			// Check for percentage
+			if (preg_match('/^\-?[0-9]*\.?[0-9]*\s?\%$/', $value)) {
+				// Convert value to number
+				$cell->setValueExplicit( (float)str_replace('%', '', $value) / 100, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+				// Set style
+				$cell->getParent()->getStyle( $cell->getCoordinate() )->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_PERCENTAGE );
+				return true;
+			}
+
+			// Check for time without seconds e.g. '9:45', '09:45'
+			if (preg_match('/^(\d|[0-1]\d|2[0-3]):[0-5]\d$/', $value)) {
+				list($h, $m) = explode(':', $value);
+				$days = $h / 24 + $m / 1440;
+				// Convert value to number
+				$cell->setValueExplicit($days, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+				// Set style
+				$cell->getParent()->getStyle( $cell->getCoordinate() )->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME3 );
+				return true;
+			}
+
+			// Check for time with seconds '9:45:59', '09:45:59'
+			if (preg_match('/^(\d|[0-1]\d|2[0-3]):[0-5]\d:[0-5]\d$/', $value)) {
+				list($h, $m, $s) = explode(':', $value);
+				$days = $h / 24 + $m / 1440 + $s / 86400;
+				// Convert value to number
+				$cell->setValueExplicit($days, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+				// Set style
+				$cell->getParent()->getStyle( $cell->getCoordinate() )->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME4 );
+				return true;
+			}
+
+			// Check for datetime, e.g. '2008-12-31', '2008-12-31 15:59', '2008-12-31 15:59:10'
+			if (($d = PHPExcel_Shared_Date::stringToExcel($value)) !== false) {
+				// Convert value to number
+				$cell->setValueExplicit($d, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+				// Determine style. Either there is a time part or not. Look for ':'
+				if (strpos($value, ':') !== false) {
+					$formatCode = 'yyyy-mm-dd h:mm';
+				} else {
+					$formatCode = 'yyyy-mm-dd';
+				}
+				$cell->getParent()->getStyle( $cell->getCoordinate() )->getNumberFormat()->setFormatCode($formatCode);
+				return true;
+			}
+
+			// Check for newline character "\n"
+			if (strpos($value, "\n") !== false) {
+				$value = PHPExcel_Shared_String::SanitizeUTF8($value);
+				$cell->setValueExplicit($value, PHPExcel_Cell_DataType::TYPE_STRING);
+				// Set style
+				$cell->getParent()->getStyle( $cell->getCoordinate() )->getAlignment()->setWrapText(true);
+				return true;
+			}
+		}
+
+		// Not bound yet? Use parent...
+		return parent::bindValue($cell, $value);
+	}
+}

+<?php
+namespace Tz\Wordpress\Tools\ExcelWriter;
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_Cell_DataType
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Cell_DataType
+{
+	/* Data types */
+	const TYPE_STRING2		= 'str';
+	const TYPE_STRING		= 's';
+	const TYPE_FORMULA		= 'f';
+	const TYPE_NUMERIC		= 'n';
+	const TYPE_BOOL			= 'b';
+    const TYPE_NULL			= 's';
+    const TYPE_INLINE		= 'inlineStr';
+	const TYPE_ERROR		= 'e';
+
+	/**
+	 * List of error codes
+	 *
+	 * @var array
+	 */
+	private static $_errorCodes	= array('#NULL!' => 0, '#DIV/0!' => 1, '#VALUE!' => 2, '#REF!' => 3, '#NAME?' => 4, '#NUM!' => 5, '#N/A' => 6);
+
+	/**
+	 * Get list of error codes
+	 *
+	 * @return array
+	 */
+	public static function getErrorCodes() {
+		return self::$_errorCodes;
+	}
+
+	/**
+	 * DataType for value
+	 *
+	 * @deprecated Replaced by PHPExcel_Cell_IValueBinder infrastructure
+	 * @param	mixed 	$pValue
+	 * @return 	int
+	 */
+	public static function dataTypeForValue($pValue = null) {
+		return PHPExcel_Cell_DefaultValueBinder::dataTypeForValue($pValue);
+	}
+
+	/**
+	 * Check a string that it satisfies Excel requirements
+	 *
+	 * @param mixed Value to sanitize to an Excel string
+	 * @return mixed Sanitized value
+	 */
+	public static function checkString($pValue = null)
+	{
+		if ($pValue instanceof PHPExcel_RichText) {
+			// TODO: Sanitize Rich-Text string (max. character count is 32,767)
+			return $pValue;
+		}
+
+		// string must never be longer than 32,767 characters, truncate if necessary
+		$pValue = PHPExcel_Shared_String::Substring($pValue, 0, 32767);
+
+		// we require that newline is represented as "\n" in core, not as "\r\n" or "\r"
+		$pValue = str_replace(array("\r\n", "\r"), "\n", $pValue);
+
+		return $pValue;
+	}
+
+	/**
+	 * Check a value that it is a valid error code
+	 *
+	 * @param mixed Value to sanitize to an Excel error code
+	 * @return string Sanitized value
+	 */
+	public static function checkErrorCode($pValue = null)
+	{
+		$pValue = (string)$pValue;
+
+		if ( !array_key_exists($pValue, self::$_errorCodes) ) {
+			$pValue = '#NULL!';
+		}
+
+		return $pValue;
+	}
+
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_Cell_DataValidation
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Cell_DataValidation
+{
+	/* Data validation types */
+	const TYPE_NONE			= 'none';
+	const TYPE_CUSTOM		= 'custom';
+	const TYPE_DATE			= 'date';
+	const TYPE_DECIMAL		= 'decimal';
+	const TYPE_LIST			= 'list';
+	const TYPE_TEXTLENGTH	= 'textLength';
+	const TYPE_TIME			= 'time';
+	const TYPE_WHOLE		= 'whole';
+	
+	/* Data validation error styles */
+	const STYLE_STOP		= 'stop';
+	const STYLE_WARNING		= 'warning';
+	const STYLE_INFORMATION	= 'information';
+	
+	/* Data validation operators */
+	const OPERATOR_BETWEEN				= 'between';
+	const OPERATOR_EQUAL				= 'equal';
+	const OPERATOR_GREATERTHAN			= 'greaterThan';
+	const OPERATOR_GREATERTHANOREQUAL	= 'greaterThanOrEqual';
+	const OPERATOR_LESSTHAN				= 'lessThan';
+	const OPERATOR_LESSTHANOREQUAL		= 'lessThanOrEqual';
+	const OPERATOR_NOTBETWEEN			= 'notBetween';
+	const OPERATOR_NOTEQUAL				= 'notEqual';
+    
+    /**
+     * Formula 1
+     *
+     * @var string
+     */
+    private $_formula1;
+    
+    /**
+     * Formula 2
+     *
+     * @var string
+     */
+    private $_formula2;
+    
+    /**
+     * Type
+     *
+     * @var string
+     */
+    private $_type = PHPExcel_Cell_DataValidation::TYPE_NONE;
+    
+    /**
+     * Error style
+     *
+     * @var string
+     */
+    private $_errorStyle = PHPExcel_Cell_DataValidation::STYLE_STOP;
+    
+    /**
+     * Operator
+     *
+     * @var string
+     */
+    private $_operator;
+    
+    /**
+     * Allow Blank
+     *
+     * @var boolean
+     */
+    private $_allowBlank;
+    
+    /**
+     * Show DropDown
+     *
+     * @var boolean
+     */
+    private $_showDropDown;
+    
+    /**
+     * Show InputMessage
+     *
+     * @var boolean
+     */
+    private $_showInputMessage;
+    
+    /**
+     * Show ErrorMessage
+     *
+     * @var boolean
+     */
+    private $_showErrorMessage;
+    
+    /**
+     * Error title
+     *
+     * @var string
+     */
+    private $_errorTitle;
+    
+    /**
+     * Error
+     *
+     * @var string
+     */
+    private $_error;
+    
+    /**
+     * Prompt title
+     *
+     * @var string
+     */
+    private $_promptTitle;
+    
+    /**
+     * Prompt
+     *
+     * @var string
+     */
+    private $_prompt;
+    
+    /**
+     * Create a new PHPExcel_Cell_DataValidation
+     *
+     * @throws	Exception
+     */
+    public function __construct()
+    {
+    	// Initialise member variables
+		$this->_formula1 			= '';
+		$this->_formula2 			= '';
+		$this->_type 				= PHPExcel_Cell_DataValidation::TYPE_NONE;
+		$this->_errorStyle 			= PHPExcel_Cell_DataValidation::STYLE_STOP;
+		$this->_operator 			= '';
+		$this->_allowBlank 			= false;
+		$this->_showDropDown 		= false;
+		$this->_showInputMessage 	= false;
+		$this->_showErrorMessage 	= false;
+		$this->_errorTitle 			= '';
+		$this->_error 				= '';
+		$this->_promptTitle 		= '';
+		$this->_prompt 				= '';
+    }
+	
+	/**
+	 * Get Formula 1
+	 *
+	 * @return string
+	 */
+	public function getFormula1() {
+		return $this->_formula1;
+	}
+
+	/**
+	 * Set Formula 1
+	 *
+	 * @param	string	$value
+	 * @return PHPExcel_Cell_DataValidation
+	 */
+	public function setFormula1($value = '') {
+		$this->_formula1 = $value;
+		return $this;
+	}
+
+	/**
+	 * Get Formula 2
+	 *
+	 * @return string
+	 */
+	public function getFormula2() {
+		return $this->_formula2;
+	}
+
+	/**
+	 * Set Formula 2
+	 *
+	 * @param	string	$value
+	 * @return PHPExcel_Cell_DataValidation
+	 */
+	public function setFormula2($value = '') {
+		$this->_formula2 = $value;
+		return $this;
+	}
+	
+	/**
+	 * Get Type
+	 *
+	 * @return string
+	 */
+	public function getType() {
+		return $this->_type;
+	}
+
+	/**
+	 * Set Type
+	 *
+	 * @param	string	$value
+	 * @return PHPExcel_Cell_DataValidation
+	 */
+	public function setType($value = PHPExcel_Cell_DataValidation::TYPE_NONE) {
+		$this->_type = $value;
+		return $this;
+	}
+
+	/**
+	 * Get Error style
+	 *
+	 * @return string
+	 */
+	public function getErrorStyle() {
+		return $this->_errorStyle;
+	}
+
+	/**
+	 * Set Error style
+	 *
+	 * @param	string	$value
+	 * @return PHPExcel_Cell_DataValidation
+	 */
+	public function setErrorStyle($value = PHPExcel_Cell_DataValidation::STYLE_STOP) {
+		$this->_errorStyle = $value;
+		return $this;
+	}
+
+	/**
+	 * Get Operator
+	 *
+	 * @return string
+	 */
+	public function getOperator() {
+		return $this->_operator;
+	}
+
+	/**
+	 * Set Operator
+	 *
+	 * @param	string	$value
+	 * @return PHPExcel_Cell_DataValidation
+	 */
+	public function setOperator($value = '') {
+		$this->_operator = $value;
+		return $this;
+	}
+
+	/**
+	 * Get Allow Blank
+	 *
+	 * @return boolean
+	 */
+	public function getAllowBlank() {
+		return $this->_allowBlank;
+	}
+
+	/**
+	 * Set Allow Blank
+	 *
+	 * @param	boolean	$value
+	 * @return PHPExcel_Cell_DataValidation
+	 */
+	public function setAllowBlank($value = false) {
+		$this->_allowBlank = $value;
+		return $this;
+	}
+
+	/**
+	 * Get Show DropDown
+	 *
+	 * @return boolean
+	 */
+	public function getShowDropDown() {
+		return $this->_showDropDown;
+	}
+
+	/**
+	 * Set Show DropDown
+	 *
+	 * @param	boolean	$value
+	 * @return PHPExcel_Cell_DataValidation
+	 */
+	public function setShowDropDown($value = false) {
+		$this->_showDropDown = $value;
+		return $this;
+	}
+
+	/**
+	 * Get Show InputMessage
+	 *
+	 * @return boolean
+	 */
+	public function getShowInputMessage() {
+		return $this->_showInputMessage;
+	}
+
+	/**
+	 * Set Show InputMessage
+	 *
+	 * @param	boolean	$value
+	 * @return PHPExcel_Cell_DataValidation
+	 */
+	public function setShowInputMessage($value = false) {
+		$this->_showInputMessage = $value;
+		return $this;
+	}
+
+	/**
+	 * Get Show ErrorMessage
+	 *
+	 * @return boolean
+	 */
+	public function getShowErrorMessage() {
+		return $this->_showErrorMessage;
+	}
+
+	/**
+	 * Set Show ErrorMessage
+	 *
+	 * @param	boolean	$value
+	 * @return PHPExcel_Cell_DataValidation
+	 */
+	public function setShowErrorMessage($value = false) {
+		$this->_showErrorMessage = $value;
+		return $this;
+	}
+
+	/**
+	 * Get Error title
+	 *
+	 * @return string
+	 */
+	public function getErrorTitle() {
+		return $this->_errorTitle;
+	}
+
+	/**
+	 * Set Error title
+	 *
+	 * @param	string	$value
+	 * @return PHPExcel_Cell_DataValidation
+	 */
+	public function setErrorTitle($value = '') {
+		$this->_errorTitle = $value;
+		return $this;
+	}
+
+	/**
+	 * Get Error
+	 *
+	 * @return string
+	 */
+	public function getError() {
+		return $this->_error;
+	}
+
+	/**
+	 * Set Error
+	 *
+	 * @param	string	$value
+	 * @return PHPExcel_Cell_DataValidation
+	 */
+	public function setError($value = '') {
+		$this->_error = $value;
+		return $this;
+	}
+
+	/**
+	 * Get Prompt title
+	 *
+	 * @return string
+	 */
+	public function getPromptTitle() {
+		return $this->_promptTitle;
+	}
+
+	/**
+	 * Set Prompt title
+	 *
+	 * @param	string	$value
+	 * @return PHPExcel_Cell_DataValidation
+	 */
+	public function setPromptTitle($value = '') {
+		$this->_promptTitle = $value;
+		return $this;
+	}
+
+	/**
+	 * Get Prompt
+	 *
+	 * @return string
+	 */
+	public function getPrompt() {
+		return $this->_prompt;
+	}
+
+	/**
+	 * Set Prompt
+	 *
+	 * @param	string	$value
+	 * @return PHPExcel_Cell_DataValidation
+	 */
+	public function setPrompt($value = '') {
+		$this->_prompt = $value;
+		return $this;
+	}
+	
+	/**
+	 * Get hash code
+	 *
+	 * @return string	Hash code
+	 */	
+	public function getHashCode() {
+    	return md5(
+    		  $this->_formula1
+    		. $this->_formula2
+    		. $this->_type = PHPExcel_Cell_DataValidation::TYPE_NONE
+    		. $this->_errorStyle = PHPExcel_Cell_DataValidation::STYLE_STOP
+    		. $this->_operator
+    		. ($this->_allowBlank ? 't' : 'f')
+    		. ($this->_showDropDown ? 't' : 'f')
+    		. ($this->_showInputMessage ? 't' : 'f')
+    		. ($this->_showErrorMessage ? 't' : 'f')
+    		. $this->_errorTitle
+    		. $this->_error
+    		. $this->_promptTitle
+    		. $this->_prompt
+    		. __CLASS__
+    	);
+    }
+    
+	/**
+	 * Implement PHP __clone to create a deep clone, not just a shallow copy.
+	 */
+	public function __clone() {
+		$vars = get_object_vars($this);
+		foreach ($vars as $key => $value) {
+			if (is_object($value)) {
+				$this->$key = clone $value;
+			} else {
+				$this->$key = $value;
+			}
+		}
+	}
+}

+<?php
+namespace Tz\Wordpress\Tools\ExcelWriter;
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/** PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+	/**
+	 * @ignore
+	 */
+	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
+	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+}
+
+
+/**
+ * PHPExcel_Cell_DefaultValueBinder
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Cell_DefaultValueBinder implements PHPExcel_Cell_IValueBinder
+{
+	/**
+	 * Bind value to a cell
+	 *
+	 * @param PHPExcel_Cell $cell	Cell to bind value to
+	 * @param mixed $value			Value to bind in cell
+	 * @return boolean
+	 */
+	public function bindValue(PHPExcel_Cell $cell, $value = null)
+	{
+		// sanitize UTF-8 strings
+		if (is_string($value)) {
+			$value = PHPExcel_Shared_String::SanitizeUTF8($value);
+		}
+
+		// Set value explicit
+		$cell->setValueExplicit( $value, PHPExcel_Cell_DataType::dataTypeForValue($value) );
+
+		// Done!
+		return true;
+	}
+
+	/**
+	 * DataType for value
+	 *
+	 * @param	mixed 	$pValue
+	 * @return 	int
+	 */
+	public static function dataTypeForValue($pValue = null) {
+		// Match the value against a few data types
+		if (is_null($pValue)) {
+			return PHPExcel_Cell_DataType::TYPE_NULL;
+
+		} elseif ($pValue === '') {
+			return PHPExcel_Cell_DataType::TYPE_STRING;
+
+		} elseif ($pValue instanceof PHPExcel_RichText) {
+			return PHPExcel_Cell_DataType::TYPE_STRING;
+
+		} elseif ($pValue{0} === '=' && strlen($pValue) > 1) {
+			return PHPExcel_Cell_DataType::TYPE_FORMULA;
+
+		} elseif (is_bool($pValue)) {
+			return PHPExcel_Cell_DataType::TYPE_BOOL;
+
+		} elseif (is_float($pValue) || is_int($pValue)) {
+			return PHPExcel_Cell_DataType::TYPE_NUMERIC;
+
+		} elseif (preg_match('/^\-?([0-9]+\\.?[0-9]*|[0-9]*\\.?[0-9]+)$/', $pValue)) {
+			return PHPExcel_Cell_DataType::TYPE_NUMERIC;
+
+		} elseif (is_string($pValue) && array_key_exists($pValue, PHPExcel_Cell_DataType::getErrorCodes())) {
+			return PHPExcel_Cell_DataType::TYPE_ERROR;
+
+		} else {
+			return PHPExcel_Cell_DataType::TYPE_STRING;
+
+		}
+	}
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_Cell_Hyperlink
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Cell_Hyperlink
+{
+	/**
+	 * URL to link the cell to
+	 *
+	 * @var string
+	 */
+	private $_url;
+	
+	/**
+	 * Tooltip to display on the hyperlink
+	 *
+	 * @var string
+	 */
+	private $_tooltip;	
+	
+    /**
+     * Create a new PHPExcel_Cell_Hyperlink
+     *
+     * @param 	string				$pUrl		Url to link the cell to
+     * @param	string				$pTooltip	Tooltip to display on the hyperlink
+     * @throws	Exception
+     */
+    public function __construct($pUrl = '', $pTooltip = '')
+    {
+    	// Initialise member variables
+		$this->_url 		= $pUrl;
+		$this->_tooltip 	= $pTooltip;
+    }
+	
+	/**
+	 * Get URL
+	 *
+	 * @return string
+	 */
+	public function getUrl() {
+		return $this->_url;
+	}
+
+	/**
+	 * Set URL
+	 *
+	 * @param	string	$value
+	 * @return PHPExcel_Cell_Hyperlink
+	 */
+	public function setUrl($value = '') {
+		$this->_url = $value;
+		return $this;
+	}
+	
+	/**
+	 * Get tooltip
+	 *
+	 * @return string
+	 */
+	public function getTooltip() {
+		return $this->_tooltip;
+	}
+
+	/**
+	 * Set tooltip
+	 *
+	 * @param	string	$value
+	 * @return PHPExcel_Cell_Hyperlink
+	 */
+	public function setTooltip($value = '') {
+		$this->_tooltip = $value;
+		return $this;
+	}
+	
+	/**
+	 * Is this hyperlink internal? (to another sheet)
+	 *
+	 * @return boolean
+	 */
+	public function isInternal() {
+		return strpos($this->_url, 'sheet://') !== false;
+	}
+	
+	/**
+	 * Get hash code
+	 *
+	 * @return string	Hash code
+	 */	
+	public function getHashCode() {
+    	return md5(
+    		  $this->_url
+    		. $this->_tooltip
+    		. __CLASS__
+    	);
+    }
+}

+<?php
+namespace Tz\Wordpress\Tools\ExcelWriter;
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_Cell_IValueBinder
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+interface PHPExcel_Cell_IValueBinder
+{
+	/**
+	 * Bind value to a cell
+	 *
+	 * @param PHPExcel_Cell $cell	Cell to bind value to
+	 * @param mixed $value			Value to bind in cell
+	 * @return boolean
+	 */
+	public function bindValue(PHPExcel_Cell $cell, $value = null);
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_Comment
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Comment implements PHPExcel_IComparable
+{
+	/**
+	 * Author
+	 *
+	 * @var string
+	 */
+	private $_author;
+
+	/**
+	 * Rich text comment
+	 *
+	 * @var PHPExcel_RichText
+	 */
+	private $_text;
+
+	/**
+	 * Comment width (CSS style, i.e. XXpx or YYpt)
+	 *
+	 * @var string
+	 */
+	private $_width = '96pt';
+
+	/**
+	 * Left margin (CSS style, i.e. XXpx or YYpt)
+	 *
+	 * @var string
+	 */
+	private $_marginLeft = '59.25pt';
+
+	/**
+	 * Top margin (CSS style, i.e. XXpx or YYpt)
+	 *
+	 * @var string
+	 */
+	private $_marginTop = '1.5pt';
+
+	/**
+	 * Visible
+	 *
+	 * @var boolean
+	 */
+	private $_visible = false;
+
+	/**
+	 * Comment height (CSS style, i.e. XXpx or YYpt)
+	 *
+	 * @var string
+	 */
+	private $_height = '55.5pt';
+
+	/**
+	 * Comment fill color
+	 *
+	 * @var PHPExcel_Style_Color
+	 */
+	private $_fillColor;
+
+	/**
+	 * Alignment
+	 *
+	 * @var string
+	 */
+	private $_alignment;
+
+    /**
+     * Create a new PHPExcel_Comment
+     *
+     * @throws	Exception
+     */
+    public function __construct()
+    {
+    	// Initialise variables
+    	$this->_author		= 'Author';
+    	$this->_text		= new PHPExcel_RichText();
+    	$this->_fillColor	= new PHPExcel_Style_Color('FFFFFFE1');
+		$this->_alignment	= PHPExcel_Style_Alignment::HORIZONTAL_GENERAL;
+    }
+
+    /**
+     * Get Author
+     *
+     * @return string
+     */
+    public function getAuthor() {
+    	return $this->_author;
+    }
+
+    /**
+     * Set Author
+     *
+     * @param string $pValue
+     * @return PHPExcel_Comment
+     */
+	public function setAuthor($pValue = '') {
+		$this->_author = $pValue;
+		return $this;
+	}
+
+    /**
+     * Get Rich text comment
+     *
+     * @return PHPExcel_RichText
+     */
+    public function getText() {
+    	return $this->_text;
+    }
+
+    /**
+     * Set Rich text comment
+     *
+     * @param PHPExcel_RichText $pValue
+     * @return PHPExcel_Comment
+     */
+    public function setText(PHPExcel_RichText $pValue) {
+    	$this->_text = $pValue;
+    	return $this;
+    }
+
+    /**
+     * Get comment width (CSS style, i.e. XXpx or YYpt)
+     *
+     * @return string
+     */
+    public function getWidth() {
+        return $this->_width;
+    }
+
+    /**
+     * Set comment width (CSS style, i.e. XXpx or YYpt)
+     *
+     * @param string $value
+     * @return PHPExcel_Comment
+     */
+    public function setWidth($value = '96pt') {
+        $this->_width = $value;
+        return $this;
+    }
+
+    /**
+     * Get comment height (CSS style, i.e. XXpx or YYpt)
+     *
+     * @return string
+     */
+    public function getHeight() {
+        return $this->_height;
+    }
+
+    /**
+     * Set comment height (CSS style, i.e. XXpx or YYpt)
+     *
+     * @param string $value
+     * @return PHPExcel_Comment
+     */
+    public function setHeight($value = '55.5pt') {
+        $this->_height = $value;
+        return $this;
+    }
+
+    /**
+     * Get left margin (CSS style, i.e. XXpx or YYpt)
+     *
+     * @return string
+     */
+    public function getMarginLeft() {
+        return $this->_marginLeft;
+    }
+
+    /**
+     * Set left margin (CSS style, i.e. XXpx or YYpt)
+     *
+     * @param string $value
+     * @return PHPExcel_Comment
+     */
+    public function setMarginLeft($value = '59.25pt') {
+        $this->_marginLeft = $value;
+        return $this;
+    }
+
+    /**
+     * Get top margin (CSS style, i.e. XXpx or YYpt)
+     *
+     * @return string
+     */
+    public function getMarginTop() {
+        return $this->_marginTop;
+    }
+
+    /**
+     * Set top margin (CSS style, i.e. XXpx or YYpt)
+     *
+     * @param string $value
+     * @return PHPExcel_Comment
+     */
+    public function setMarginTop($value = '1.5pt') {
+        $this->_marginTop = $value;
+        return $this;
+    }
+
+    /**
+     * Is the comment visible by default?
+     *
+     * @return boolean
+     */
+    public function getVisible() {
+        return $this->_visible;
+    }
+
+    /**
+     * Set comment default visibility
+     *
+     * @param boolean $value
+     * @return PHPExcel_Comment
+     */
+    public function setVisible($value = false) {
+        $this->_visible = $value;
+        return $this;
+    }
+
+    /**
+     * Get fill color
+     *
+     * @return PHPExcel_Style_Color
+     */
+    public function getFillColor() {
+        return $this->_fillColor;
+    }
+
+    /**
+     * Set Alignment
+     *
+     * @param string $pValue
+     * @return PHPExcel_Comment
+     */
+    public function setAlignment($pValue = PHPExcel_Style_Alignment::HORIZONTAL_GENERAL) {
+		$this->_alignment = $pValue;
+		return $this;
+    }
+
+    /**
+     * Get Alignment
+     *
+     * @return string
+     */
+    public function getAlignment() {
+		return $this->_alignment;
+    }
+
+	/**
+	 * Get hash code
+	 *
+	 * @return string	Hash code
+	 */
+	public function getHashCode() {
+    	return md5(
+    		  $this->_author
+    		. $this->_text->getHashCode()
+    		. $this->_width
+    		. $this->_height
+    		. $this->_marginLeft
+    		. $this->_marginTop
+    		. ($this->_visible ? 1 : 0)
+    		. $this->_fillColor->getHashCode()
+    		. $this->_alignment
+    		. __CLASS__
+    	);
+    }
+
+	/**
+	 * Implement PHP __clone to create a deep clone, not just a shallow copy.
+	 */
+	public function __clone() {
+		$vars = get_object_vars($this);
+		foreach ($vars as $key => $value) {
+			if (is_object($value)) {
+				$this->$key = clone $value;
+			} else {
+				$this->$key = $value;
+			}
+		}
+	}
+}

+<?php
+namespace Tz\Wordpress\Tools\ExcelWriter;
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_DocumentSecurity
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_DocumentSecurity
+{
+	/**
+	 * LockRevision
+	 *
+	 * @var boolean
+	 */
+	private $_lockRevision;
+
+	/**
+	 * LockStructure
+	 *
+	 * @var boolean
+	 */
+	private $_lockStructure;
+
+	/**
+	 * LockWindows
+	 *
+	 * @var boolean
+	 */
+	private $_lockWindows;
+
+	/**
+	 * RevisionsPassword
+	 *
+	 * @var string
+	 */
+	private $_revisionsPassword;
+
+	/**
+	 * WorkbookPassword
+	 *
+	 * @var string
+	 */
+	private $_workbookPassword;
+
+    /**
+     * Create a new PHPExcel_DocumentSecurity
+     */
+    public function __construct()
+    {
+    	// Initialise values
+    	$this->_lockRevision		= false;
+    	$this->_lockStructure		= false;
+    	$this->_lockWindows			= false;
+    	$this->_revisionsPassword	= '';
+    	$this->_workbookPassword	= '';
+    }
+
+    /**
+     * Is some sort of dcument security enabled?
+     *
+     * @return boolean
+     */
+    function isSecurityEnabled() {
+    	return 	$this->_lockRevision ||
+		    	$this->_lockStructure ||
+		    	$this->_lockWindows;
+    }
+
+    /**
+     * Get LockRevision
+     *
+     * @return boolean
+     */
+    function getLockRevision() {
+    	return $this->_lockRevision;
+    }
+
+    /**
+     * Set LockRevision
+     *
+     * @param boolean $pValue
+     * @return PHPExcel_DocumentSecurity
+     */
+    function setLockRevision($pValue = false) {
+    	$this->_lockRevision = $pValue;
+    	return $this;
+    }
+
+    /**
+     * Get LockStructure
+     *
+     * @return boolean
+     */
+    function getLockStructure() {
+    	return $this->_lockStructure;
+    }
+
+    /**
+     * Set LockStructure
+     *
+     * @param boolean $pValue
+     * @return PHPExcel_DocumentSecurity
+     */
+    function setLockStructure($pValue = false) {
+		$this->_lockStructure = $pValue;
+		return $this;
+    }
+
+    /**
+     * Get LockWindows
+     *
+     * @return boolean
+     */
+    function getLockWindows() {
+    	return $this->_lockWindows;
+    }
+
+    /**
+     * Set LockWindows
+     *
+     * @param boolean $pValue
+     * @return PHPExcel_DocumentSecurity
+     */
+    function setLockWindows($pValue = false) {
+    	$this->_lockWindows = $pValue;
+    	return $this;
+    }
+
+    /**
+     * Get RevisionsPassword (hashed)
+     *
+     * @return string
+     */
+    function getRevisionsPassword() {
+    	return $this->_revisionsPassword;
+    }
+
+    /**
+     * Set RevisionsPassword
+     *
+     * @param string 	$pValue
+     * @param boolean 	$pAlreadyHashed If the password has already been hashed, set this to true
+     * @return PHPExcel_DocumentSecurity
+     */
+    function setRevisionsPassword($pValue = '', $pAlreadyHashed = false) {
+    	if (!$pAlreadyHashed) {
+    		$pValue = PHPExcel_Shared_PasswordHasher::hashPassword($pValue);
+    	}
+    	$this->_revisionsPassword = $pValue;
+    	return $this;
+    }
+
+    /**
+     * Get WorkbookPassword (hashed)
+     *
+     * @return string
+     */
+    function getWorkbookPassword() {
+    	return $this->_workbookPassword;
+    }
+
+    /**
+     * Set WorkbookPassword
+     *
+     * @param string 	$pValue
+     * @param boolean 	$pAlreadyHashed If the password has already been hashed, set this to true
+     * @return PHPExcel_DocumentSecurity
+     */
+    function setWorkbookPassword($pValue = '', $pAlreadyHashed = false) {
+    	if (!$pAlreadyHashed) {
+    		$pValue = PHPExcel_Shared_PasswordHasher::hashPassword($pValue);
+    	}
+		$this->_workbookPassword = $pValue;
+		return $this;
+    }
+
+	/**
+	 * Implement PHP __clone to create a deep clone, not just a shallow copy.
+	 */
+	public function __clone() {
+		$vars = get_object_vars($this);
+		foreach ($vars as $key => $value) {
+			if (is_object($value)) {
+				$this->$key = clone $value;
+			} else {
+				$this->$key = $value;
+			}
+		}
+	}
+}

+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package	PHPExcel
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_HashTable
+ *
+ * @category   PHPExcel
+ * @package	PHPExcel
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_HashTable
+{
+	/**
+	 * HashTable elements
+	 *
+	 * @var array
+	 */
+	public $_items = array();
+
+	/**
+	 * HashTable key map
+	 *
+	 * @var array
+	 */
+	public $_keyMap = array();
+
+	/**
+	 * Create a new PHPExcel_HashTable
+	 *
+	 * @param	PHPExcel_IComparable[] $pSource	Optional source array to create HashTable from
+	 * @throws	Exception
+	 */
+	public function __construct($pSource = null)
+	{
+		if (!is_null($pSource)) {
+			// Create HashTable
+			$this->addFromSource($pSource);
+		}
+	}
+
+	/**
+	 * Add HashTable items from source
+	 *
+	 * @param	PHPExcel_IComparable[] $pSource	Source array to create HashTable from
+	 * @throws	Exception
+	 */
+	public function addFromSource($pSource = null) {
+		// Check if an array was passed
+		if ($pSource == null) {
+			return;
+		} else if (!is_array($pSource)) {
+			throw new Exception('Invalid array parameter passed.');
+		}
+
+		foreach ($pSource as $item) {
+			$this->add($item);
+		}
+	}
+
+	/**
+	 * Add HashTable item
+	 *
+	 * @param	PHPExcel_IComparable $pSource	Item to add
+	 * @throws	Exception
+	 */
+	public function add(PHPExcel_IComparable $pSource = null) {
+		$hash = $pSource->getHashCode();
+		if (!isset($this->_items[$hash])) {
+			$this->_items[$hash] = $pSource;
+			$this->_keyMap[count($this->_items) - 1] = $hash;
+		}
+	}
+
+	/**
+	 * Remove HashTable item
+	 *
+	 * @param	PHPExcel_IComparable $pSource	Item to remove
+	 * @throws	Exception
+	 */
+	public function remove(PHPExcel_IComparable $pSource = null) {
+		$hash = $pSource->getHashCode();
+		if (isset($this->_items[$hash])) {
+			unset($this->_items[$hash]);
+
+			$deleteKey = -1;
+			foreach ($this->_keyMap as $key => $value) {
+				if ($deleteKey >= 0) {
+					$this->_keyMap[$key - 1] = $value;
+				}
+
+				if ($value == $hash) {
+					$deleteKey = $key;
+				}
+			}
+			unset($this->_keyMap[count($this->_keyMap) - 1]);
+		}
+	}
+
+	/**
+	 * Clear HashTable
+	 *
+	 */
+	public function clear() {
+		$this->_items = array();
+		$this->_keyMap = array();
+	}
+
+	/**
+	 * Count
+	 *
+	 * @return int
+	 */
+	public function count() {
+		return count($this->_items);
+	}
+
+	/**
+	 * Get index for hash code
+	 *
+	 * @param	string	$pHashCode
+	 * @return	int	Index
+	 */
+	public function getIndexForHashCode($pHashCode = '') {
+		return array_search($pHashCode, $this->_keyMap);
+	}
+
+	/**
+	 * Get by index
+	 *
+	 * @param	int	$pIndex
+	 * @return	PHPExcel_IComparable
+	 *
+	 */
+	public function getByIndex($pIndex = 0) {
+		if (isset($this->_keyMap[$pIndex])) {
+			return $this->getByHashCode( $this->_keyMap[$pIndex] );
+		}
+
+		return null;
+	}
+
+	/**
+	 * Get by hashcode
+	 *
+	 * @param	string	$pHashCode
+	 * @return	PHPExcel_IComparable
+	 *
+	 */
+	public function getByHashCode($pHashCode = '') {
+		if (isset($this->_items[$pHashCode])) {
+			return $this->_items[$pHashCode];
+		}
+
+		return null;
+	}
+
+	/**
+	 * HashTable to array
+	 *
+	 * @return PHPExcel_IComparable[]
+	 */
+	public function toArray() {
+		return $this->_items;
+	}
+
+	/**
+	 * Implement PHP __clone to create a deep clone, not just a shallow copy.
+	 */
+	public function __clone() {
+		$vars = get_object_vars($this);
+		foreach ($vars as $key => $value) {
+			if (is_object($value)) {
+				$this->$key = clone $value;
+			}
+		}
+	}
+}

+<?php
+namespace Tz\Wordpress\Tools\ExcelWriter;
+/**
+ * PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**
+ * PHPExcel_IComparable
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+interface PHPExcel_IComparable
+{
+	/**
+	 * Get hash code
+	 *
+	 * @return string	Hash code
+	 */
+	public function getHashCode();
+
+}

+<?php
+namespace Tz\Wordpress\Tools\ExcelWriter;
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    1.7.6, 2011-02-27
+ */
+
+
+/**	PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+	/**
+	 *	@ignore
+	 */
+	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../');
+	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+}
+
+/**
+ * PHPExcel_IOFactory
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_IOFactory
+{
+	/**
+	 *	Search locations
+	 *
+	 *	@var	array
+	 *	@access	private
+	 *	@static
+	 */
+	private static $_searchLocations = array(
+		array( 'type' => 'IWriter', 'path' => 'PHPExcel/Writer/{0}.php', 'class' => 'PHPExcel_Writer_{0}' ),
+		array( 'type' => 'IReader', 'path' => 'PHPExcel/Reader/{0}.php', 'class' => 'PHPExcel_Reader_{0}' )
+	);
+
+	/**
+	 *	Autoresolve classes
+	 *
+	 *	@var	array
+	 *	@access	private
+	 *	@static
+	 */
+	private static $_autoResolveClasses = array(
+		'Excel2007',
+		'Excel5',
+		'Excel2003XML',
+		'OOCalc',
+		'SYLK',
+		'Gnumeric',
+		'CSV',
+	);
+
+    /**
+     *	Private constructor for PHPExcel_IOFactory
+     */
+    private function __construct() { }
+
+    /**
+     *	Get search locations
+     *
+	 *	@static
+	 *	@access	public
+     *	@return	array
+     */
+	public static function getSearchLocations() {
+		return self::$_searchLocations;
+	}	//	function getSearchLocations()
+
+	/**
+	 *	Set search locations
+	 *
+	 *	@static
+	 *	@access	public
+	 *	@param	array $value
+	 *	@throws	Exception
+	 */
+	public static function setSearchLocations($value) {
+		if (is_array($value)) {
+			self::$_searchLocations = $value;
+		} else {
+			throw new Exception('Invalid parameter passed.');
+		}
+	}	//	function setSearchLocations()
+
+	/**
+	 *	Add search location
+	 *
+	 *	@static
+	 *	@access	public
+	 *	@param	string $type		Example: IWriter
+	 *	@param	string $location	Example: PHPExcel/Writer/{0}.php
+	 *	@param	string $classname 	Example: PHPExcel_Writer_{0}
+	 */
+	public static function addSearchLocation($type = '', $location = '', $classname = '') {
+		self::$_searchLocations[] = array( 'type' => $type, 'path' => $location, 'class' => $classname );
+	}	//	function addSearchLocation()
+
+	/**
+	 *	Create PHPExcel_Writer_IWriter
+	 *
+	 *	@static
+	 *	@access	public
+	 *	@param	PHPExcel $phpExcel
+	 *	@param	string  $writerType	Example: Excel2007
+	 *	@return	PHPExcel_Writer_IWriter
+	 *	@throws	Exception
+	 */
+	public static function createWriter(PHPExcel $phpExcel, $writerType = '') {
+		// Search type
+		$searchType = 'IWriter';
+
+		// Include class
+		foreach (self::$_searchLocations as $searchLocation) {
+			if ($searchLocation['type'] == $searchType) {
+				$className = str_replace('{0}', $writerType, $searchLocation['class']);
+				$classFile = str_replace('{0}', $writerType, $searchLocation['path']);
+
+                if ($className == 'PHPExcel_Writer_Excel5') {
+                    $className = __NAMESPACE__ . '\\' . $className;
+                }
+				$instance = new $className($phpExcel);
+				if (!is_null($instance)) {
+					return $instance;
+				}
+			}
+		}
+
+		// Nothing found...
+		throw new Exception("No $searchType found for type $writerType");
+	}	//	function createWriter()
+
+	/**
+	 *	Create PHPExcel_Reader_IReader
+	 *
+	 *	@static
+	 *	@access	public
+	 *	@param	string $readerType	Example: Excel2007
+	 *	@return	PHPExcel_Reader_IReader
+	 *	@throws	Exception
+	 */
+	public static function createReader($readerType = '') {
+		// Search type
+		$searchType = 'IReader';
+
+		// Include class
+		foreach (self::$_searchLocations as $searchLocation) {
+			if ($searchLocation['type'] == $searchType) {
+				$className = str_replace('{0}', $readerType, $searchLocation['class']);
+				$classFile = str_replace('{0}', $readerType, $searchLocation['path']);
+
+				$instance = new $className();
+				if (!is_null($instance)) {
+					return $instance;
+				}
+			}
+		}
+
+		// Nothing found...
+		throw new Exception("No $searchType found for type $readerType");
+	}	//	function createReader()
+
+	/**
+	 *	Loads PHPExcel from file using automatic PHPExcel_Reader_IReader resolution
+	 *
+	 *	@static
+	 *	@access public
+	 *	@param 	string 		$pFileName
+	 *	@return	PHPExcel
+	 *	@throws	Exception
+	 */
+	public static function load($pFilename) {
+		$reader = self::createReaderForFile($pFilename);
+		return $reader->load($pFilename);
+	}	//	function load()
+
+	/**
+	 *	Identify file type using automatic PHPExcel_Reader_IReader resolution
+	 *
+	 *	@static
+	 *	@access public
+	 *	@param 	string 		$pFileName
+	 *	@return	string
+	 *	@throws	Exception
+	 */
+	public static function identify($pFilename) {
+		$reader = self::createReaderForFile($pFilename);
+		$className = get_class($reader);
+		$classType = explode('_',$className);
+		unset($reader);
+		return array_pop($classType);
+	}	//	function identify()
+
+	/**
+	 *	Create PHPExcel_Reader_IReader for file using automatic PHPExcel_Reader_IReader resolution
+	 *
+	 *	@static
+	 *	@access	public
+	 *	@param 	string 		$pFileName
+	 *	@return	PHPExcel_Reader_IReader
+	 *	@throws	Exception
+	 */
+	public static function createReaderForFile($pFilename) {
+
+		// First, lucky guess by inspecting file extension
+		$pathinfo = pathinfo($pFilename);
+
+		if (isset($pathinfo['extension'])) {
+			switch (strtolower($pathinfo['extension'])) {
+				case 'xlsx':
+					$reader = self::createReader('Excel2007');
+					break;
+				case 'xls':
+					$reader = self::createReader('Excel5');
+					break;
+				case 'ods':
+					$reader = self::createReader('OOCalc');
+					break;
+				case 'slk':
+					$reader = self::createReader('SYLK');
+					break;
+				case 'xml':
+					$reader = self::createReader('Excel2003XML');
+					break;
+				case 'gnumeric':
+					$reader = self::createReader('Gnumeric');
+					break;
+				case 'csv':
+					// Do nothing
+					// We must not try to use CSV reader since it loads
+					// all files including Excel files etc.
+					break;
+				default:
+					break;
+			}
+
+			// Let's see if we are lucky
+			if (isset($reader) && $reader->canRead($pFilename)) {
+				return $reader;
+			}
+
+		}
+
+		// If we reach here then "lucky guess" didn't give any result
+
+		// Try loading using self::$_autoResolveClasses
+		foreach (self::$_autoResolveClasses as $autoResolveClass) {
+			$reader = self::createReader($autoResolveClass);
+			if ($reader->canRead($pFilename)) {
+				return $reader;
+			}
+		}
+
+	}	//	function createReaderForFile()
+}