3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = 0; $a = &$x; $x++; echo 'x=', $x, ' a=', $a, '\n'; $a++; echo 'x=', $x, ' a=', $a, '\n';
based on EpoDS
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
x=1 a=1\nx=2 a=2\n