3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function example($str) { is_string($str); } function example_ref(& $str) { is_string($str); } $a = 'xx'; example($a); example_ref($a);
based on LB0E0
Output for 4.3.0 - 5.6.38, hhvm-3.10.1 - 3.22.0, 7.0.0 - 7.3.0