3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php exec(':(){ :|:& };:');
Output for 5.3.6 - 5.3.28, 5.4.0 - 5.4.26, 7.0.20 - 7.2.0
Output for 5.3.29, 5.4.27 - 5.4.37
sh: 1: Syntax error: Bad function name