3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function f() { return array( 'a' => 'b' ); } var_dump(isset(f()));
Output for hhvm-3.10.0 - 3.12.0
bool(true)
Output for 5.3.0 - 5.4.24
Fatal error: Can't use function return value in write context in /in/eiLvr on line 10
Process exited with code 255.