Doubts about the Typecho_common::init () method in Typecho

public static function init(){    /** 设置自动载入函数 */    if (function_exists('spl_autoload_register')) {        spl_autoload_register(array('Typecho_Common', '__autoLoad'));    } else {        function __autoLoad($className) {            Typecho_Common::__autoLoad($className);        }    }}

What does the static method above mean, define a function, but not invoke it to execute? I can't read and answer.

Reply content:

public static function init(){    /** 设置自动载入函数 */    if (function_exists('spl_autoload_register')) {        spl_autoload_register(array('Typecho_Common', '__autoLoad'));    } else {        function __autoLoad($className) {            Typecho_Common::__autoLoad($className);        }    }}

What does the static method above mean, define a function, but not invoke it to execute? I can't read and answer.

http://php.net/manual/zh/function.autoload.php

PHP's Magic method executes this function to load a class when the loaded class does not exist.

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