3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function chain(...$iters) { foreach ($iters as $iter) { yield from $iter; } } $gen = (function() { yield 1; yield 2; yield 3; })(); $repeatedTwice = chain($gen, $gen); foreach ($repeatedTwice as $v) var_dump($v);
based on nX2oZ
Output for 7.0.0 - 7.2.0
int(1) int(2) int(3) Fatal error: Uncaught Error: Generator passed to yield from was aborted without proper return and is unable to continue in /in/42NSf:5 Stack trace: #0 /in/42NSf(11): chain(Object(Generator), Object(Generator)) #1 {main} thrown in /in/42NSf on line 5
Process exited with code 255.
Output for 5.6.7 - 5.6.28
Parse error: syntax error, unexpected '$iter' (T_VARIABLE) in /in/42NSf on line 5
Process exited with code 255.
Output for 5.4.2 - 5.5.35
Parse error: syntax error, unexpected '.', expecting '&' or variable (T_VARIABLE) in /in/42NSf on line 3
Process exited with code 255.
Output for 5.3.18 - 5.3.29
Parse error: syntax error, unexpected '.', expecting '&' or T_VARIABLE in /in/42NSf on line 3
Process exited with code 255.