3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ip_hex = 0xC0A8071B; $ip_octet = long2ip($ip_hex); $ip_num = ip2long($ip_octet); echo 'IP Num: ', $ip_hex, PHP_EOL; echo 'Num -> Hex: ', dechex($ip_hex), PHP_EOL; echo 'IP Octet: ', $ip_octet, PHP_EOL; echo 'IP Num: ', $ip_num, PHP_EOL; echo 'Num -> Hex: ', dechex($ip_num), PHP_EOL;

preferences:
60.53 ms | 402 KiB | 5 Q