3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = function() {var_dump(yield);}; foreach($a() as $k => $v) { var_dump($k, $v); }
based on nEWPX
Output for 5.5.24 - 7.1.7
int(0) NULL NULL
Output for 5.3.0 - 5.4.45
Notice: Use of undefined constant yield - assumed 'yield' in /in/71WgQ on line 3 string(5) "yield" Warning: Invalid argument supplied for foreach() in /in/71WgQ on line 5
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/71WgQ on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/71WgQ on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/71WgQ on line 3
Process exited with code 255.