3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a=1; $b=&$a; $c = (++$a); $d = $a++; echo $c +$d; echo (++$a)+($a++); echo $a; echo $b;
Output for hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
4855
Output for 4.3.0 - 5.6.28
4955