3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $postuser = 3; $bin = pack("I", $postuser); echo unpack($bin);
Output for 7.1.0
Warning: unpack() expects at least 2 parameters, 1 given in /in/FgG3G on line 7
Output for 5.3.0 - 7.0.14
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