1 files changed, 8 insertions, 3 deletions
diff --git a/program/include/rcube_session.php b/program/include/rcube_session.php
index 1f5290c71..5ec9f337f 100644
--- a/program/include/rcube_session.php
+++ b/program/include/rcube_session.php
@@ -332,10 +332,15 @@ class rcube_session
    *
    * @param mixed Callback function
    */
-  public function register_gc_handler($func_name)
+  public function register_gc_handler($func)
   {
-    if ($func_name && !in_array($func_name, $this->gc_handlers))
-      $this->gc_handlers[] = $func_name;
+    foreach ($this->gc_handlers as $handler) {
+      if ($handler == $func) {
+        return;
+      }
+    }
+
+    $this->gc_handlers[] = $func;
   }