Fixed deprication warnings

src/Pecee/SimpleRouter/Route/LoadableRoute.php

@@ -167,7 +167,7 @@ abstract class LoadableRoute extends Route implements ILoadableRoute
 
             if (stripos($url, $param1) !== false || stripos($url, $param) !== false) {
                 /* Add parameter to the correct position */
-                $url = str_ireplace([sprintf($param1, $param), sprintf($param2, $param)], $value, $url);
+                $url = str_ireplace([sprintf($param1, $param), sprintf($param2, $param)], (string)$value, $url);
             } else {
                 /* Parameter aren't recognized and will be appended at the end of the url */
                 $url .= $value . '/';

src/Pecee/SimpleRouter/Route/RouteController.php

@@ -81,7 +81,7 @@ class RouteController extends LoadableRoute implements IControllerRoute
             $url .= '//' . $group->getDomains()[0];
         }
 
-        $url .= '/' . trim($this->getUrl(), '/') . '/' . strtolower($method) . implode('/', $parameters);
+        $url .= '/' . trim($this->getUrl(), '/') . '/' . strtolower((string)$method) . implode('/', $parameters);
 
         return '/' . trim($url, '/') . '/';
     }

src/Pecee/SimpleRouter/Route/RouteGroup.php

@@ -74,7 +74,7 @@ class RouteGroup extends Route implements IGroupRoute
         $parsedPrefix = $this->prefix;
 
         foreach ($this->getParameters() as $parameter => $value) {
-            $parsedPrefix = str_ireplace('{' . $parameter . '}', $value, $parsedPrefix);
+            $parsedPrefix = str_ireplace('{' . $parameter . '}', (string)$value, (string)$parsedPrefix);
         }
 
         /* Skip if prefix doesn't match */

src/Pecee/SimpleRouter/Route/RouteResource.php

@@ -106,7 +106,7 @@ class RouteResource extends LoadableRoute implements IControllerRoute
             return false;
         }
 
-        $action = strtolower(trim($this->parameters['action']));
+        $action = strtolower(trim((string)$this->parameters['action']));
         $id = $this->parameters['id'];
 
         // Remove action parameter