3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo exec(`ls -l`); ?>
Output for 4.3.2 - 7.1.7
Warning: exec(): Cannot execute a blank command in /in/Bdkhp on line 2
Output for 4.3.0 - 4.3.1
Warning: exec() [http://www.php.net/function.exec]: Cannot execute a blank command in /in/Bdkhp on line 2