Some interface compatibility fixes

martinfobian · Aug 31, 2014 · 4451259 · 4451259
1 parent bde3448
commit 4451259
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/Devristo/Phpws/Protocol/StackTransport.php b/src/Devristo/Phpws/Protocol/StackTransport.php
@@ -139,12 +139,12 @@ public function offsetUnset($offset)
         throw new \BadMethodCallException("Immutable stack, cannot set element");
     }
 
-    public function on($event, $listener)
+    public function on($event, callable $listener)
     {
         return $this->getTopTransport()->on($event, $listener);
     }
 
-    public function once($event, $listener)
+    public function once($event, callable $listener)
     {
         return $this->getTopTransport()->once($event, $listener);
     }