3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $f = function () { echo yield -1; }; foreach ($f() as $i) { var_dump($i); }
Output for 7.0.0 - 7.3.0rc3
int(-1)
Output for hhvm-3.15.4
Fatal error: Uncaught Error: syntax error, unexpected T_YIELD in /in/TSu1c:4 Stack trace: #0 {main}
Process exited with code 255.
Output for 5.6.0 - 5.6.30
NULL -1