class_implements
(PHP 5)
class_implements — Return the interfaces which are implemented by the given class
说明
array class_implements
( mixed $class
[, bool $autoload
] )
This function returns an array with the names of the interfaces that the given class and its parents implement.
参数
- class
-
An object (class instance) or a string (class name).
- autoload
-
Whether to allow this function to load the class automatically through the __autoload magic method. Defaults to TRUE.
返回值
Returns an array or FALSE on error.
更新日志
| 版本 | 说明 |
|---|---|
| 5.1.0 | Added the option to pass the class parameter as a string. Added the autoload parameter. |
范例
Example#1 class_implements() example
<?php
interface foo { }
class bar implements foo {}
print_r(class_implements(new bar));
// since PHP 5.1.0 you may also specify the parameter as a string
print_r(class_implements('bar'));
function __autoload($class_name) {
require_once $class_name . '.php';
}
// use __autoload to load the 'not_loaded' class
print_r(class_implements('not_loaded', true));
?>
上例的输出类似于：
Array ( [foo] => foo ) Array ( [interface_of_not_loaded] => interface_of_not_loaded )
CDN