diff --git a/lib/ace/mode/php.js b/lib/ace/mode/php.js
index a44e79c6..2754ef51 100644
--- a/lib/ace/mode/php.js
+++ b/lib/ace/mode/php.js
@@ -110,6 +110,7 @@ var Mode = function(opts) {
         "css-": CssMode,
         "php-": PhpMode
     });
+    this.foldingRules.subModes["php-"] = new CStyleFoldMode();
 };
 oop.inherits(Mode, HtmlMode);