3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test(){ $sum = 0; return function ($i) use($sum) { $sum += $i; return $sum; }; } $myfunc = test(); for($i = 0; $i < 5; $i++){ echo $myfunc($i) . PHP_EOL; }
Output for 7.4.0 - 7.4.30, 8.0.1 - 8.0.22, 8.1.0 - 8.1.9
0 1 2 3 4

preferences:
33.91 ms | 409 KiB | 5 Q