3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $handle = popen("/bin/ls", "r"); $read = fread($handle, 2096); echo $read;
Output for 4.3.0, 5.4.39 - 5.6.28, 7.0.0 - 7.1.0
Output for hhvm-3.10.0 - 3.12.0
Failed to exec: `/bin/ls'
Output for 4.3.1 - 5.4.38
sh: 1: /bin/ls: not found