3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(unpack('fdat', 0.1));
based on ilH6o
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.3.0beta1
Warning: unpack(): Type f: not enough input, need 4, have 3 in /in/hKR5G on line 3 bool(false)
Output for hhvm-3.15.4 - 3.21.0
Warning: Invalid argument: Type f: not enough input, need 4, have 3 in /in/hKR5G on line 3 bool(false)