3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_export(chr(0));
Output for 5.2.6 - 5.6.38, hhvm-3.10.1 - 3.22.0, 7.0.0 - 7.2.12
'' . "\0" . ''
Output for 5.2.0 - 5.2.5
'\000'
Output for 4.3.0 - 5.1.6
''