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1 <?php 1 <?php
2 // +----------------------------------------------------------------------+ 2 // +----------------------------------------------------------------------+
3 // | PHP Version 4 | 3 // | PHP Version 4 |
4 // +----------------------------------------------------------------------+ 4 // +----------------------------------------------------------------------+
5 // | Copyright (c) 1997-2004 The PHP Group | 5 // | Copyright (c) 1997-2004 The PHP Group |
6 // +----------------------------------------------------------------------+ 6 // +----------------------------------------------------------------------+
7 // | This source file is subject to version 3.0 of the PHP license, | 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 | 8 // | that is bundled with this package in the file LICENSE, and is |
9 // | available at through the world-wide-web at | 9 // | available at through the world-wide-web at |
10 // | http://www.php.net/license/3_0.txt. | 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 | 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 | 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. | 13 // | license@php.net so we can mail you a copy immediately. |
14 // +----------------------------------------------------------------------+ 14 // +----------------------------------------------------------------------+
15 // | Authors: Aidan Lister <aidan@php.net> | 15 // | Authors: Aidan Lister <aidan@php.net> |
16 // +----------------------------------------------------------------------+ 16 // +----------------------------------------------------------------------+
17 // 17 //
18 // $Id: is_a.php,v 1.16 2005/01/26 04:55:13 aidan Exp $ 18 // $Id: is_a.php,v 1.16 2005/01/26 04:55:13 aidan Exp $
19   19  
20   20  
21 /** 21 /**
22 * Replace function is_a() 22 * Replace function is_a()
23 * 23 *
24 * @category PHP 24 * @category PHP
25 * @package PHP_Compat 25 * @package PHP_Compat
26 * @link http://php.net/function.is_a 26 * @link http://php.net/function.is_a
27 * @author Aidan Lister <aidan@php.net> 27 * @author Aidan Lister <aidan@php.net>
28 * @version $Revision: 1.16 $ 28 * @version $Revision: 1.16 $
29 * @since PHP 4.2.0 29 * @since PHP 4.2.0
30 * @require PHP 4.0.0 (user_error) (is_subclass_of) 30 * @require PHP 4.0.0 (user_error) (is_subclass_of)
31 */ 31 */
32 if (!function_exists('is_a')) { 32 if (!function_exists('is_a')) {
33 function is_a($object, $class) 33 function is_a($object, $class)
34 { 34 {
35 if (!is_object($object)) { 35 if (!is_object($object)) {
36 return false; 36 return false;
37 } 37 }
38   38  
39 if (get_class($object) == strtolower($class)) { 39 if (get_class($object) == strtolower($class)) {
40 return true; 40 return true;
41 } else { 41 } else {
42 return is_subclass_of($object, $class); 42 return is_subclass_of($object, $class);
43 } 43 }
44 } 44 }
45 } 45 }
46   46  
47 ?> 47 ?>
48 48