/**
* Validates an IPv4 Address
*
* @param string $addr String containing the address to validate
* @param bool $private True to allow private address ranges while validating
* @param bool $loopback True to allow loopback address range while validating
* @return bool true if valid, otherwise false
*/
public static function validateInternetIPAddress($addr, $private = false, $loopback = false)
{
$flags = \FILTER_FLAG_IPV4 | \FILTER_FLAG_NO_RES_RANGE;
if (!$private) {
$flags |= \FILTER_FLAG_NO_PRIV_RANGE;
}
$ip = \trim($addr);
if (\filter_var($ip, \FILTER_VALIDATE_IP, $flags) === false) {
return false;
}
$octets = \explode('.', $ip);
if (\count($octets) !== 4) {
return false;
}
foreach ($octets as $octet) {
if (!\is_int($octet) || !Number::between($octet, 0, 255)) {
return false;
}
}
if ($loopback && $octets[0] === '127') {
return false;
}
return true;
}
