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-rw-r--r--phpBB/includes/functions_user.php7
1 files changed, 1 insertions, 6 deletions
diff --git a/phpBB/includes/functions_user.php b/phpBB/includes/functions_user.php
index 7dd850111e..5c94a90d9d 100644
--- a/phpBB/includes/functions_user.php
+++ b/phpBB/includes/functions_user.php
@@ -1455,12 +1455,7 @@ function user_unban($mode, $ban)
*/
function user_ipwhois($ip)
{
- if (empty($ip))
- {
- return '';
- }
-
- if (!preg_match(get_preg_expression('ipv4'), $ip) && !preg_match(get_preg_expression('ipv6'), $ip))
+ if (!filter_var($ip, FILTER_VALIDATE_IP))
{
return '';
}