diff --git a/library/think/Request.php b/library/think/Request.php
index bc43eb2f..c6f1198a 100644
--- a/library/think/Request.php
+++ b/library/think/Request.php
@@ -1241,8 +1241,7 @@ class Request
                 if (false !== $pos) {
                     unset($arr[$pos]);
                 }
-
-                $ip = trim($arr[0]);
+                $ip = trim(current($arr));
             } elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
                 $ip = $_SERVER['HTTP_CLIENT_IP'];
             } elseif (isset($_SERVER['REMOTE_ADDR'])) {