[HttpFoundation] added class constants in Request for HTTP request methods

src/Symfony/Component/HttpFoundation/Request.php

@@ -35,6 +35,17 @@ class Request
     const HEADER_CLIENT_PROTO = 'client_proto';
     const HEADER_CLIENT_PORT  = 'client_port';
 
+    const METHOD_HEAD    = 'HEAD';
+    const METHOD_GET     = 'GET';
+    const METHOD_POST    = 'POST';
+    const METHOD_PUT     = 'PUT';
+    const METHOD_PATCH   = 'PATCH';
+    const METHOD_DELETE  = 'DELETE';
+    const METHOD_PURGE   = 'PURGE';
+    const METHOD_OPTIONS = 'OPTIONS';
+    const METHOD_TRACE   = 'TRACE';
+    const METHOD_CONNECT = 'CONNECT';
+
     protected static $trustedProxies = array();
 
     /**