MFC array_intersect_key.inc

1 files changed, 67 insertions, 0 deletions

diff --git a/etc/inc/array_intersect_key.inc b/etc/inc/array_intersect_key.inc
new file mode 100644
index 0000000..0cd5099
--- /dev/null
+++ b/etc/inc/array_intersect_key.inc
@@ -0,0 +1,67 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP Version 4                                                        |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1997-2004 The PHP Group                                |
+// +----------------------------------------------------------------------+
+// | This source file is subject to version 3.0 of the PHP license,       |
+// | that is bundled with this package in the file LICENSE, and is        |
+// | available at through the world-wide-web at                           |
+// | http://www.php.net/license/3_0.txt.                                  |
+// | If you did not receive a copy of the PHP license and are unable to   |
+// | obtain it through the world-wide-web, please send a note to          |
+// | license@php.net so we can mail you a copy immediately.               |
+// +----------------------------------------------------------------------+
+// | Authors: Aidan Lister <aidan@php.net>                                |
+// +----------------------------------------------------------------------+
+//
+// $Id$
+
+
+/**
+ * Replace array_intersect_key()
+ *
+ * @category    PHP
+ * @package     PHP_Compat
+ * @link        http://php.net/function.array_intersect_key
+ * @author      Tom Buskens <ortega@php.net>
+ * @version     $Revision$
+ * @since       PHP 5.0.2
+ * @require     PHP 4.0.0 (user_error)
+ */
+if (!function_exists('array_intersect_key')) {
+    function array_intersect_key()
+    {
+        $args = func_get_args();
+        if (count($args) < 2) {
+            user_error('Wrong parameter count for array_intersect_key()', E_USER_WARNING);
+            return;
+        }
+
+        // Check arrays
+        $array_count = count($args);
+        for ($i = 0; $i !== $array_count; $i++) {
+            if (!is_array($args[$i])) {
+                user_error('array_intersect_key() Argument #' .
+                    ($i + 1) . ' is not an array', E_USER_WARNING);
+                return;
+            }
+        }
+
+        // Compare entries
+        $result = array();
+        foreach ($args[0] as $key1 => $value1) {
+            for ($i = 1; $i !== $array_count; $i++) {
+                foreach ($args[$i] as $key2 => $value2) {
+                    if ((string) $key1 === (string) $key2) {
+                        $result[$key1] = $value1;
+                    }
+                }
+            }
+        }
+
+        return $result;
+    }
+}
+
+?>
\ No newline at end of file