3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $current_url = 'foo.bar.baz.com'; $current_domains = explode( '.', $current_url ); $current_top_domain = array_slice( $current_domains, count( $current_domains ) - 2 ); echo implode( '.', $current_top_domain );
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.1.7, 7.1.20 - 7.2.6
baz.com
Output for 7.1.10

Process exited with code 137.