Returns TRUE if class_name is a defined class,
FALSE otherwise.
ChangeLog
Version
Description
5.0.0
The autoload was added.
Examples
Example 1. class_exists() example
<?php // Check the class exists before trying to use it if (class_exists('MyClass')) { $myclass = new MyClass(); }
?>
Example 2. autoload parameter example
<?php function __autoload($class) { include($class . '.php');
// Check to see if the include declared the class if (!class_exists($class, false)) { trigger_error("Unable to load class: $class", E_USER_WARNING); } }
if (class_exists('MyClass')) { $myclass = new MyClass(); }
