Converts a string containing an (IPv4) Internet Protocol dotted address into a long integer
Syntax
ip2long ( string $ip_address ) : int
Parameters
ip_addressA standard format address.
Return
Returns the long integer or FALSE if ip_address is invalid.
Examples
1
<?
$ip = gethostbyname('php.net');
$out = "The following URLs are equivalent:<br>\n";
$out .= 'http://php.net/' . "<br>\n";
$out .= 'http://' . $ip . '/' . "<br>\n";
$out .= 'http://' . sprintf("%u", ip2long($ip)) . '/';
echo $out;
?>The following URLs are equivalent:<br> http://php.net/<br> http://185.85.0.29/<br> http://3109355549/
2
<?
$ip = gethostbyname('php.net');
$long = ip2long($ip);
if ($long == -1 || $long === FALSE) {
echo 'Invalid IP, please try again';
} else {
echo $ip . "<br>\n";
echo $long . "<br>\n"; // - on 32-bit systems, due to integer overflow
printf("%u\n", ip2long($ip));
}
?>185.85.0.29<br> 3109355549<br> 3109355549
