1		<?php
			2		/* vim: set expandtab tabstop=4 shiftwidth=4: */
			3		// +----------------------------------------------------------------------+
			4		// | PHP Version 4                                                        |
			5		// +----------------------------------------------------------------------+
			6		// | Copyright (c) 1997-2004 The PHP Group                                |
			7		// +----------------------------------------------------------------------+
			8		// | This source file is subject to version 3.0 of the PHP license,       |
			9		// | that is bundled with this package in the file LICENSE, and is        |
			10		// | available at through the world-wide-web at                           |
			11		// | http://www.php.net/license/3_0.txt.                                  |
			12		// | If you did not receive a copy of the PHP license and are unable to   |
			13		// | obtain it through the world-wide-web, please send a note to          |
			14		// | license@php.net so we can mail you a copy immediately.               |
			15		// +----------------------------------------------------------------------+
			16		// | Authors: Stephan Schmidt <schst@php.net>                             |
			17		// |          Aidan Lister <aidan@php.net>                                |
			18		// +----------------------------------------------------------------------+
			19		//
			20		// $Id: array_udiff.php,v 1.1 2004-10-26 18:22:16 kostja Exp $
			21		//
			22
			23
			24		/**
			25		* Replace array_udiff()
			26		*
			27		* @category    PHP
			28		* @package     PHP_Compat
			29		* @link        http://php.net/function.array_udiff
			30		* @author      Stephan Schmidt <schst@php.net>
			31		* @author      Aidan Lister <aidan@php.net>
			32		* @version     $Revision: 1.1 $
			33		* @since       PHP 5
			34		* @require     PHP 4.0.1 (trigger_error)
			35		*/
			36		if (!function_exists('array_udiff'))
			37		{
			38		function array_udiff ()
			39		{
			40		$args = func_get_args();
			41
			42		if (count($args) < 3) {
			43		trigger_error('Wrong parameter count for array_udiff()', E_USER_WARNING);
			44		return null;
			45		}
			46
			47		// Get compare function
			48		$compare_func = array_pop($args);
			49		if (!is_callable($compare_func)) {
			50		if (is_array($compare_func)) {
			51		$compare_func = $compare_func[0] . '::' . $compare_func[1];
			52		}
			53		trigger_error('array_udiff() Not a valid callback ' . $compare_func, E_USER_WARNING);
			54		return null;
			55		}
			56
			57		// Check arrays
			58		$cnt = count($args);
			59		for ($i = 0; $i < $cnt; $i++) {
			60		if (!is_array($args[$i])) {
			61		trigger_error('array_udiff() Argument #' . ($i + 1). ' is not an array', E_USER_WARNING);
			62		return null;
			63		}
			64		}
			65
			66		$diff = array ();
			67		// Traverse values of the first array
			68		foreach ($args[0] as $key => $value) {
			69		// Check all arrays
			70		for ($i = 1; $i < $cnt; $i++) {
			71		foreach ($args[$i] as $cmp_value) {
			72		$result = call_user_func($compare_func, $value, $cmp_value);
			73		if ($result === 0) {
			74		continue 3;
			75		}
			76		}
			77		}
			78		$diff[$key] = $value;
			79		}
			80		return $diff;
			81		}
			82		}
			83
			84		?>