3v4l.org

run code in 300+ PHP versions simultaneously
<?php $limit = 13; $skip = 2; $keep = 3; $result = []; for ($x = 1; $x <= $limit; ++$x) { if (($x - 1) % ($skip + $keep) < $skip) { continue; } $result[] = $x; } var_export($result);

preferences:
67.9 ms | 404 KiB | 5 Q