diff options
| -rwxr-xr-x | system/core/Input.php | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/system/core/Input.php b/system/core/Input.php index 0dc2c4550..f99adad01 100755 --- a/system/core/Input.php +++ b/system/core/Input.php @@ -373,6 +373,12 @@ class CI_Input { */ function valid_ip($ip) { + // if php version >= 5.2, use filter_var to check validate ip. + if(is_php('5.2')) + { + return (bool) filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4); + } + $ip_segments = explode('.', $ip); // Always 4 segments needed |