3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(@get_headers("http://kubo2.wz.sk"));
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(false)
Output for 4.3.2 - 4.4.9

Process exited with code 255.
Output for 4.3.0 - 4.3.1