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# class_parents

(PHP 5)

class_parents -- Return the parent classes of the given class

## 说明

array class_parents ( mixed class [, bool autoload] )

This function returns an array with the name of the parent classes of the given `class`.

## 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 1. class_parents() example

`<?php class foo { } class bar extends foo {} print_r(class_parents(new bar)); // since PHP 5.1.0 you may also specify the parameter as a string print_r(class_parents('bar')); function __autoload($class_name) { require_once $class_name . '.php'; } // use __autoload to load the 'not_loaded' class print_r(class_parents('not_loaded', true)); ?>`

上例的输出类似于：

    Array
    (
        [foo] => foo
    )

    Array
    (
        [parent_of_not_loaded] => parent_of_not_loaded
    )

## 参见

class_implements()

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