IP Address Validation Help
- by Zubair1
I am using this IP Validation Function that I came across while browsing, it has been working well until today i ran into a problem.
For some reason the function won't validate this IP as valid: 203.81.192.26
I'm not too great with regular expressions, so would appreciate any help on what could be wrong.
If you have another function, I would appreciate if you could post that for me.
The code for the function is below:
public static function validateIpAddress($ip_addr)
{
global $errors;
$preg = '#^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}' .
'(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$#';
if(preg_match($preg, $ip_addr))
{
//now all the intger values are separated
$parts = explode(".", $ip_addr);
//now we need to check each part can range from 0-255
foreach($parts as $ip_parts)
{
if(intval($ip_parts) > 255 || intval($ip_parts) < 0)
{
$errors[] = "ip address is not valid.";
return false;
}
return true;
}
return true;
} else {
$errors[] = "please double check the ip address.";
return false;
}
}
