From 22107054862932f87248643e7a203708252f0453 Mon Sep 17 00:00:00 2001
From: Yuriy Pikhtarev <iglix@me.com>
Date: Tue, 9 May 2017 22:53:53 +0300
Subject: [PATCH] 'str(i)str(...)' could be replaced with 'str(i)pos(...)'.

---
 library/attach_mod/includes/functions_attach.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/attach_mod/includes/functions_attach.php b/library/attach_mod/includes/functions_attach.php
index 3080710c7..c4e86d0cb 100644
--- a/library/attach_mod/includes/functions_attach.php
+++ b/library/attach_mod/includes/functions_attach.php
@@ -410,7 +410,7 @@ function attachment_sync_topic($topics)
  */
 function get_extension($filename)
 {
-    if (false === strstr($filename, '.')) {
+    if (false === strpos($filename, '.')) {
         return '';
     }
     $extension = strrchr(strtolower($filename), '.');