3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $foo = substr("foo",3); if($foo !== FALSE){ echo "PHP 7\n"; echo gettype($foo); //string } else{ echo "PHP 5\n"; echo gettype($foo); //boolean }
based on YLujH
Output for hhvm-3.15.4 - 3.17.3, 7.0.0 - 7.3.0rc3
PHP 7 string
Output for 5.6.0 - 5.6.30, hhvm-3.12.14
PHP 5 boolean