3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(ctype_digit(''));
Output for 4.4.1 - 4.4.9, 5.1.0 - 7.1.0
bool(false)
Output for 4.3.0 - 4.4.0, 5.0.0 - 5.0.5
bool(true)