验证特殊形式的IP地址

Question

I have encountered a strange IP which has redundant zero values among the octets. Is there anyway to properly validate this as an IP or use regular expression to remove those redundant zeroes?

example is of follows: 218.064.215.239 (take note of the extra zero at the second octet "064").

I do have one working IP validation function but it will not validiate this Ip properly due to the nature of the regular expression unable to accept that extra zero. Following is the code in PHP:

function valid_ip($ip) {
    return preg_match("/^([1-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])" .
            "(\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3}$/", $ip);
} 

thanks for any help in advance peeps! :D

Answer 1

This will correct them:

$ip = "123.456.007.89";
$octets = explode(".", $ip);
$corrected = array();
foreach ($octets as $octet) {
 array_push($corrected, (int)$octet);
}
echo implode(".", $corrected);