3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo(&$bar) { $qux = $bar; $bar += 1; return $qux; } $x = 5; $y = foo($x); echo $x; echo $y;
Output for 5.6.0 - 5.6.30, hhvm-3.12.14 - 3.17.3, 7.0.0 - 7.3.1
65