Remove PHP 5.1.6-specific code
diff --git a/system/core/Input.php b/system/core/Input.php
index 54b7e09..901b414 100755
--- a/system/core/Input.php
+++ b/system/core/Input.php
@@ -366,36 +366,7 @@
*/
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);
}
// --------------------------------------------------------------------