Php route parser end of the URL

I wrote a little php url parser for my own php-mvc-framework and i need little help in the following code: ``` <?php class Route{ private $routes = []; public function __construct(){} public function addRoute($method, $url, $callback){ $this->routes[] = array('method' => $method, 'url' => $url, 'callback' => $callback); } public function doRouting(){ $reqUrl = $_SERVER['REQUEST_URI']; $reqMet = $_SERVER['REQUEST_METHOD']; foreach($this->routes as $route) { // convert urls like '/users/:uid/posts/:pid' to regular expression $pattern = "@^" . preg_replace('/\\\:[a-zA-Z0-9\_\-]+/', '([a-zA-Z0-9\-\_]+)', preg_quote($route['url'])) . "$@D"; $matches = array(); if($reqMet == $route['method'] && preg_match($pattern, $reqUrl, $matches)) { // remove the first match array_shift($matches); // call the callback with the matched positions as params return call_user_func_array($route['callback'], $matches); } } } $route = new Route(); $route->addRoute('GET', '/', function(){ echo 'root'; }); $route->addRoute('GET', '/users/', function(){ echo 'users'; }); $route->addRoute('GET', '/users/:uid/posts/:pid/', function($uid, $pid){ echo $uid.'<br/>'.$pid; }); $route->addRoute('GET', '/users/:uid/posts/:pid/edit', function($uid, $pid){ echo 'users posts edit'; }); $route->doRouting(); ``` I want allow an optional `/` at the end of the URL. For example, in this current routes definition when `REQUEST_URI` is `/users/123/posts/456` i want same result(function call) when `REQUEST_URI` is `/users/123/posts/456/`. Also, `/users/123/posts/456/edit` call new function.