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# 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

例子 1. class_implements() example

`<?php interface foo { } class bar implements foo {} print_r(class_implements(new bar)); // since PHP 5.1 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
    )

## 参见

class_parents()

后退 | 起点 | 前进
SimpleXMLIterator::valid | 上一级 | class_parents