diff --git a/src/ZM/global_functions.php b/src/ZM/global_functions.php
index 3a4a6971..e1f4b3d0 100644
--- a/src/ZM/global_functions.php
+++ b/src/ZM/global_functions.php
@@ -288,6 +288,16 @@ function bot() {
     }
 }
 
+function getAllFdByConnectType(string $type = 'default'): array
+{
+    $fd = [];
+    foreach (ManagerGM::getAllByName($type) as $ConnectionObjectObj) {
+        array_push($fd, $ConnectionObjectObj->getFd());
+    }
+    return $fd;
+}
+
+