3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function f() { var_dump(yield -1); } $g = f(); foreach ($g as $i) {}
based on 07Q4j
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.2.6
NULL
Output for hhvm-3.15.4
Fatal error: Uncaught Error: syntax error, unexpected T_YIELD, expecting ')' in /in/vWrG1:4 Stack trace: #0 {main}
Process exited with code 255.