3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php // Author: holdoffhunger@gmail.com $hexadecimal_number = "FFFFFFFFFFFFFFFF"; $binary_number = base_convert($hexadecimal_number, 16, 2); print($binary_number); ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
0000000000000000000000000000000000000000000000000000000000000000