Simple implementation of PHP automatic loading

This article mainly introduces the simple implementation of PHP automatic loading, has a certain reference value, now share to everyone, the need for friends can refer to

PSR-based specification, using namespaces and Spl_autoload_register () for automatic loading

File structure:

|--api
|--account.php
|--user.php
|--service
|--login.php
|--user.php

|--application.php

application.php

<?phpuse 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

<?phpnamespace api;use service\login;class user{public  function __construct () {    echo "User class <br/>";    New Login ();    New account ();}  }

api\account.php

<?phpnamespace api;class account{public  function __construct () {    echo ' account Class <br/> ';  }}

service\login.php

<?phpnamespace service;class login{public  function __construct () {    echo "Login class <br/>";  }}

service\user.php

<?phpnamespace service;class user{public  function __construct () {    echo "Service under User class <br/>";  }}

Results: