3v4l.org

run code in 300+ 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 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array(1) { [0]=> string(1) "a" } array(1) { [0]=> string(1) "b" }
preferences:
45.75 ms | 839 KiB | 4 Q