3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(is_subclass_of('B', 'B'));
Output for 4.3.0 - 5.0.2, 5.3.7 - 7.2.0
bool(false)
Output for 5.0.3 - 5.3.6
Warning: Unknown class passed as parameter in /in/cPg4g on line 3 bool(false)