3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php exec(`ls`);
Output for 4.3.2 - 5.6.28, 7.0.0 - 7.1.0
Warning: exec(): Cannot execute a blank command in /in/HO9Wu on line 2
Output for hhvm-3.12.0
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 4.3.1
Warning: exec() [http://www.php.net/function.exec]: Cannot execute a blank command in /in/HO9Wu on line 2