3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php exec('uname -a');
Output for 5.5.24 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Output for 4.3.2 - 5.4.45
Warning: exec(): Unable to fork [uname -a] in /in/jqTQe on line 3
Output for 4.3.0 - 4.3.1
Warning: exec() [http://www.php.net/function.exec]: Unable to fork [uname -a] in /in/jqTQe on line 3