php 自制简单路由类 望大神指点

class route{    /** @var null  模块 */    private static $module = null;    /** @var null 控制器 */    private static $controller = null;    /** @var null 方法 */    private static $action = null;    /** @var  控制器url */    private static $controllerPath;

/**     * route constructor.     * @param array $config url     */    public function __construct($config = [])    {        $var_parse = explode(‘/‘, $config[‘r‘]);        if (count($var_parse) == 3){            self::$module = $var_parse[0];            self::$controller = ucwords($var_parse[1]).‘Controller‘;            self::$action = $var_parse[2];            self::$controllerPath = APP_ROOT.‘/controllers/‘.self::$module.‘/‘.self::$controller.‘.php‘;        }elseif(count($var_parse) == 2){            self::$controller = ucwords($var_parse[0]).‘Controller‘;            self::$action = $var_parse[1];            self::$controllerPath = APP_ROOT.‘/controllers/‘.self::$controller.‘.php‘;        }    }

/**     * 执行控制器方法     * @return null     */    public static function run(){        self::register();        $controller = new self::$controller;        if(method_exists($controller, self::$action)){            $action = self::$action;            $controller->$action();        }else{            header("HTTP/1.1 404 Not Found");        }    }

/**     * 加载类     */    public static function register(){        spl_autoload_register("self::loadClass");    }

//自动加载    public static function loadClass(){        if(!file_exists(self::$controllerPath)){            header("HTTP/1.1 404 Not Found");        }        require_once self::$controllerPath;    }}