3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class string {} return is_a("foo", 'string');
Output for 4.3.0 - 4.4.9, 5.3.0 - 5.6.28, hhvm-3.10.0
Output for 5.0.0 - 5.2.17
Strict Standards: is_a(): Deprecated. Please use the instanceof operator in /in/4lA38 on line 3