3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $m1=10; $m2=20; for($i=1; $i<3; $i++){ echo ${"m$i"} . "\n"; } ?>
based on pMOTK
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
10 20