diff --git a/extend/base/helper.php b/extend/base/helper.php
index 9f0ec7f..d2f96c1 100644
--- a/extend/base/helper.php
+++ b/extend/base/helper.php
@@ -454,3 +454,9 @@ if (!function_exists('format_null_value')) {
         return $value;
     }
 }
+if (!function_exists('ctype_numeric')) {
+    function ctype_numeric($input)
+    {
+        return is_numeric($input);
+    }
+}