php教程

spl_autoload_call

(PHP 5 >= 5.1.0, PHP 7)

spl_autoload_call尝试调用所有已注册的__autoload()函数来装载请求类

说明

spl_autoload_call ( string $class_name ) : void

可以直接在程序中手动调用此函数来使用所有已注册的__autoload函数装载类或接口。

参数

class_name

搜索的类名。

返回值

没有返回值。

User Contributed Notes

k dot varmark at gmail dot com 02-Feb-2011 03:40
It should be noted, that calling spl_autoload_call on a child class, and then on its parent class, throws a fatal error.

This happens because autoloading the child class also loads the class it extends. And since spl_autoload_call forcibly calls the registered autoload function(s), not taking into account whether the class exists, a fatal error is thrown:

File: child.class.php

<?php
class Child extends Parent () {
    public function
__construct () {
       
parent::__construct();
    }
}
?>

File: parent.class.php

<?php
class Parent () {
    public function
__construct () {

    }
}
?>

File: autoload.php

<?php

/*    works fine    */
   
spl_autoload_call('Child');

/*    throws: Fatal error: Cannot redeclare class Parent in /parent.class.php on line 2    */
   
spl_autoload_call('Parent');

?>

CopyRight © 2008-2022 verySource.Com All Rights reserved. 京ICP备17048824号-1 京公网安备:11010502034788