Simple implementation of PHP autoloading
这篇文章主要介绍了关于PHP 自动加载的简单实现,有着一定的参考价值,现在分享给大家,有需要的朋友可以参考一下
基于psr的规范,使用命名空间和spl_autoload_register()来实现自动加载
文件结构:
|--Api
|--Account.php
|--User.php
|--Service
|--Login.php
|--User.php
|--Application.php
Application.php
<?php use Api\User; use Service\User as User2; class Application{ public static function main(){ self::registe(); new User(); new User2(); } public static function registe(){ spl_autoload_register("Application::loadClass"); } public static function loadClass($class){ $class=str_replace('\\', '/', $class); $class="./".$class.".php"; require_once $class; } } Application::main();
Api\User.php
<?php namespace Api; use Service\Login; class User{ public function __construct(){ echo "User类<br/>"; new Login(); new Account(); } }
Api\Account.php
<?php namespace Api; class Account{ public function __construct(){ echo "Account类<br/>"; } }
Service\Login.php
<?php namespace Service; class Login{ public function __construct(){ echo "Login类<br/>"; } }
Service\User.php
<?php namespace Service; class User{ public function __construct(){ echo "Service下的User类<br/>"; } }
结果:
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