3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $array = unpack('Vint/Vint', hash_hmac('md5', str_pad(646, 4, '0', STR_PAD_LEFT), 'default', true)); print_r($array); echo $array['int'] & 16;
based on muhTk
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0beta1
Array ( [int] => 1833736845 ) 0