3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function foo($x) { $x[0] = 42; } $c = array(1); $d = array($c[0]); foo($d); echo $d[0], "\n";
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
1