diff options
Diffstat (limited to 'system/core/Input.php')
| -rwxr-xr-x | system/core/Input.php | 31 |
1 files changed, 1 insertions, 30 deletions
diff --git a/system/core/Input.php b/system/core/Input.php index 54b7e0923..901b4147e 100755 --- a/system/core/Input.php +++ b/system/core/Input.php @@ -366,36 +366,7 @@ class CI_Input { */ public function valid_ip($ip) { - // if php version >= 5.2, use filter_var to check validate ip. - if (function_exists('filter_var')) - { - return (bool) filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4); - } - - $ip_segments = explode('.', $ip); - - // Always 4 segments needed - if (count($ip_segments) !== 4) - { - return FALSE; - } - // IP can not start with 0 - if ($ip_segments[0][0] == '0') - { - return FALSE; - } - // Check each segment - foreach ($ip_segments as $segment) - { - // IP segments must be digits and can not be - // longer than 3 digits or greater then 255 - if ($segment == '' OR preg_match('/[^0-9]/', $segment) OR $segment > 255 OR strlen($segment) > 3) - { - return FALSE; - } - } - - return TRUE; + return (bool) filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4); } // -------------------------------------------------------------------- |