3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $hex = "\07"; var_dump($hex);
Output for 4.3.0 - 5.3.28, 5.4.0 - 5.4.26, 5.4.34 - 7.2.0
string(1) ""
Output for 5.3.29, 5.4.27 - 5.4.32
string(1) "4pZfb"