3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $postuser = 3; $bin = pack("I", $postuser); print_r( unpack("I",$bin));
Output for 4.3.5 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [1] => 3 )
Output for 4.3.0 - 4.3.4
Array ( [] => 3 )