fix: Namespace-relative names for php (#4963)

Author: mkslanc

lib/ace/mode/php/php.js

@@ -461,10 +461,6 @@ define(function (require, exports, module) {
 						value: PHP.Constants.T_MATCH,
 						re: /^match\b/i
 					},
-					{
-						value: PHP.Constants.T_NAMESPACE,
-						re: /^namespace\b/i
-					},
 					{
 						value: PHP.Constants.T_NEW,
 						re: /^new\b/i
@@ -782,6 +778,10 @@ define(function (require, exports, module) {
 						value: PHP.Constants.T_NAME_RELATIVE,
 						re: /^namespace\\\w+(?:\\\w+)*/
 					},
+					{
+						value: PHP.Constants.T_NAMESPACE,
+						re: /^namespace\b/i
+					},
 					{
 						value: PHP.Constants.T_ATTRIBUTE,
 						re: /^#\[([\S\s]*?)]/