/php/pear/PHP/Compat/Function/array_intersect_assoc.php

 1<?php
 2// +----------------------------------------------------------------------+
 3// | PHP Version 4                                                        |
 4// +----------------------------------------------------------------------+
 5// | Copyright (c) 1997-2004 The PHP Group                                |
 6// +----------------------------------------------------------------------+
 7// | This source file is subject to version 3.0 of the PHP license,       |
 8// | that is bundled with this package in the file LICENSE, and is        |
 9// | available at through the world-wide-web at                           |
10// | http://www.php.net/license/3_0.txt.                                  |
11// | If you did not receive a copy of the PHP license and are unable to   |
12// | obtain it through the world-wide-web, please send a note to          |
13// | license@php.net so we can mail you a copy immediately.               |
14// +----------------------------------------------------------------------+
15// | Authors: Aidan Lister <aidan@php.net>                                |
16// +----------------------------------------------------------------------+
17//
18// $Id: array_intersect_assoc.php,v 1.4 2005/01/26 04:55:13 aidan Exp $
19
20
21/**
22 * Replace array_intersect_assoc()
23 *
24 * @category    PHP
25 * @package     PHP_Compat
26 * @link        http://php.net/function.array_intersect_assoc
27 * @author      Aidan Lister <aidan@php.net>
28 * @version     $Revision: 1.4 $
29 * @since       PHP 4.3.0
30 * @require     PHP 4.0.0 (user_error)
31 */
32if (!function_exists('array_intersect_assoc')) {
33    function array_intersect_assoc()
34    {
35        // Sanity check
36        $args = func_get_args();
37        if (count($args) < 2) {
38            user_error('wrong parameter count for array_intersect_assoc()', E_USER_WARNING);
39            return;
40        }
41
42        // Check arrays
43        $array_count = count($args);
44        for ($i = 0; $i !== $array_count; $i++) {
45            if (!is_array($args[$i])) {
46                user_error('array_intersect_assoc() Argument #' .
47                    ($i + 1) . ' is not an array', E_USER_WARNING);
48                return;
49            }
50        }
51
52        // Compare entries
53        $intersect = array();
54        foreach ($args[0] as $key => $value) {
55            $intersect[$key] = $value;
56
57            for ($i = 1; $i < $array_count; $i++) {
58                if (!isset($args[$i][$key]) || $args[$i][$key] != $value) {
59                    unset($intersect[$key]);
60                    break;
61                }
62            }
63        }
64
65        return $intersect;
66    }
67}
68
69?>