3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?hh \HH\Asio\join(async { foreach(async { yield await \HH\Asio\later(); } await as $v) {} });
Output for 7.0.0 - 7.1.7
Parse error: syntax error, unexpected '{', expecting ',' or ')' in /in/oBFQt on line 2
Process exited with code 255.
Output for hhvm-3.15.4
Fatal error: Uncaught Error: syntax error, unexpected T_AWAIT, expecting ';' in /in/oBFQt:3 Stack trace: #0 {main}
Process exited with code 255.
Output for 5.6.0 - 5.6.30
Parse error: syntax error, unexpected '{' in /in/oBFQt on line 2
Process exited with code 255.