3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo `while read x; do echo "$x"; done < /etc/hosts`;
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: x in /in/Xu7X0 on line 2
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: x in /in/Xu7X0 on line 2