Simplify query string removal

Per a comment from @Moln

Author: weierophinney

src/ServerRequestFactory.php

@@ -238,9 +238,6 @@ public static function marshalRequestUri(array $server)
      */
     public static function stripQueryString($path)
     {
-        if (($qpos = strpos($path, '?')) !== false) {
-            return substr($path, 0, $qpos);
-        }
-        return $path;
+        return explode('?', $path, 2)[0];
     }
 }

src/functions/marshal_uri_from_sapi.php

@@ -49,7 +49,7 @@ function marshalUriFromSapi(array $server, array $headers)
     $path = marshalRequestPath($server);
 
     // Strip query string
-    $path = false !== ($qpos = strpos($path, '?')) ? substr($path, 0, $qpos) : $path;
+    $path = explode('?', $path, 2)[0];
 
     // URI query
     $query = '';