3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(filter_var('$1271.com#', FILTER_VALIDATE_DOMAIN, FILTER_FLAG_HOSTNAME));
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
bool(false)
preferences:
95.1 ms | 406 KiB | 5 Q