3v4l.org

run code in 500+ PHP versions simultaneously
<?php function foo() { yield from [ ['a'] ]; yield from [ ['b'] ]; } foreach (foo() as $x) { var_dump($x); }
Output for 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.32, 8.4.1 - 8.4.23, 8.5.0 - 8.5.8
array(1) { [0]=> string(1) "a" } array(1) { [0]=> string(1) "b" }
preferences:
62.1 ms | 879 KiB | 4 Q