david
28b02db2ea
git-svn-id: https://192.168.0.254/svn/Proyectos.Incam_SGD/tags/3.7.0.2_original@1 eb19766c-00d9-a042-a3a0-45cb8ec72764
53 lines
1.9 KiB
PHP
53 lines
1.9 KiB
PHP
<?php
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/**
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* Replace function is_callable()
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*
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* @category PHP
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* @package PHP_Compat
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* @link http://php.net/function.is_callable
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* @author Gaetano Giunta <giunta.gaetano@sea-aeroportimilano.it>
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* @version $Id: is_callable.php,v 1.3 2006/08/21 14:03:15 ggiunta Exp $
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* @since PHP 4.0.6
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* @require PHP 4.0.0 (true, false, etc...)
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* @todo add the 3rd parameter syntax...
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*/
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if (!function_exists('is_callable')) {
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function is_callable($var, $syntax_only=false)
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{
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if ($syntax_only)
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{
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/* from The Manual:
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* If the syntax_only argument is TRUE the function only verifies
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* that var might be a function or method. It will only reject simple
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* variables that are not strings, or an array that does not have a
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* valid structure to be used as a callback. The valid ones are
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* supposed to have only 2 entries, the first of which is an object
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* or a string, and the second a string
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*/
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return (is_string($var) || (is_array($var) && count($var) == 2 && is_string(end($var)) && (is_string(reset($var)) || is_object(reset($var)))));
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}
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else
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{
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if (is_string($var))
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{
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return function_exists($var);
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}
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else if (is_array($var) && count($var) == 2 && is_string($method = end($var)))
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{
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$obj = reset($var);
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if (is_string($obj))
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{
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$methods = get_class_methods($obj);
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return (bool)(is_array($methods) && in_array(strtolower($method), $methods));
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}
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else if (is_object($obj))
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{
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return method_exists($obj, $method);
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}
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}
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return false;
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}
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}
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}
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?>
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