3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $postuser = 3; $bin = pack("I", $postuser); echo unpack($bin);
Output for 7.1.0 - 7.2.0
Warning: unpack() expects at least 2 parameters, 1 given in /in/FgG3G on line 7
Output for 5.3.0 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.0.20
Warning: unpack() expects exactly 2 parameters, 1 given in /in/FgG3G on line 7
Output for 4.3.0 - 5.2.17
Warning: Wrong parameter count for unpack() in /in/FgG3G on line 7