3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php system("/bin/sh -c 'a(){\necho \"foo\"\n};a'");
Output for 4.3.0 - 5.6.23, 7.0.0 - 7.1.0
Output for hhvm-3.10.0 - 3.12.0
Failed to exec: `/bin/sh -c 'a(){ echo "foo" };a''