SortTransform.php
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<?php
/*
"Contact Form to Database" Copyright (C) 2011-2012 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/>.
*/
require_once('BaseTransform.php');
/**
* Subclass this and implement the "sort" function to create
* a sort transform using your own criteria.
*/
abstract class SortTransform extends BaseTransform {
public function getTransformedData() {
usort($this->data, array($this, 'sort'));
return $this->data;
}
/**
* @param $a array: associative array of 1 form entry
* @param $b array: associative array of 1 form entry
* @return int -1 if a>b, 0 if a==b, 1 if a<b
*/
public abstract function sort($a, $b);
}