3v4l.org

run code in 300+ PHP versions simultaneously
<?php function f() { false and yield; } var_dump(f()); foreach(f() as $o) { var_dump($o); }
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
object(Generator)#1 (0) { }
Output for 7.0.0 - 7.0.33
NULL Warning: Invalid argument supplied for foreach() in /in/WC9bj on line 8
preferences:
274.71 ms | 401 KiB | 331 Q