3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $mas = array('first' => '1', 'second' => '2'); function f($m){ $m['first'] = 3; var_dump($m); return 'Done!'; } var_dump($mas); echo '============'; f($mas); echo ('----------'); var_dump($mas);
based on Xs5Dl
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { ["first"]=> string(1) "1" ["second"]=> string(1) "2" } ============array(2) { ["first"]=> int(3) ["second"]=> string(1) "2" } ----------array(2) { ["first"]=> string(1) "1" ["second"]=> string(1) "2" }