TotalField.php
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<?php
/*
"Contact Form to Database" Copyright (C) 2011-2015 Michael Simpson (email : michael.d.simpson@gmail.com)
This file is part of Contact Form to Database.
Contact Form to Database is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Contact Form to Database 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with Contact Form to Database.
If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Class TotalField a Transform used to add a total row to the end of the data set
* with totals for specified fields.
*/
class TotalField implements CFDBTransform {
/**
* @var array
*/
var $rows = array();
/**
* @var array
*/
var $fields = array();
/**
* @var array
*/
var $totals;
/**
* @var bool
*/
var $finished = false;
function __construct() {
$this->fields = func_get_args();
foreach ($this->fields as $field) {
$this->totals[$field] = 0.0;
}
}
/**
* @param $entry array associative array of a single for entry
* @return void
*/
public function addEntry(&$entry) {
$this->rows[] = $entry;
foreach ($this->fields as $field) {
if (isset($entry[$field])) {
$this->totals[$field] += floatval($entry[$field]);
}
}
}
/**
* Call this when done adding entries. Apply transform across all entered data,
* then return the entire set. The returned set may be entirely different data than
* what was input (e.g. statistics)
* @return array of associative of array of data.
*/
public function getTransformedData() {
if (!$this->finished) {
$this->rows[] = $this->totals;
$this->finished = true;
}
return $this->rows;
}
}