3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array(); $a[0] = "1"; $b = array(); $b = $a; $b['foo'] = 42; var_dump($b);
Output for 4.3.0 - 7.2.0
array(2) { [0]=> string(1) "1" ["foo"]=> int(42) }