<?php
/**
* A simple php router
* Suppose that your controller is in ./controllers/
* use :
* Router::getInstance();
* Router::get('Your_url','Controller@method_to_call');
*
* Example :
* For the url www.yourdomaine.com/blog
*
* Router::getInstance();
* Router::get('blog','BlogController@post');
**/
class Router
{
    public static $instance;

    public function __construct() {
        self::$instance = $this;
    }

    static public function get($path, $arg)
    {
        $url = trim($_SERVER['REQUEST_URI'], '/');

        if($url == $path) {
            $data = explode("@",$arg);
            $file = 'controllers/'.$data[0].'.php';
            $method = $data[1];
            $controller = $data[0];

            if(file_exists($file)) {
               include($file);
               $Class = new $controller();
               call_user_func([$Class,$method]);
               die;
           }
        }
    }

    static public function getInstance() {
        if (self::$instance === null) {
            self::$instance = new self();
        }
        return self::$instance;
    }
}