3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 1; $b = &$a; $c = 3; $d = &$c; $d = $b; echo "$a $b $c $d";
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
1 1 1 1