3v4l.org

run code in 300+ PHP versions simultaneously
<?php define("EOL", "\n"); $m = 3; for($i = 0; $i <= $m; $i++){ $k = $i ? floor(log($i, $m)) : 0; $l = 0; for($o = $k; $o >= 0; $o--){ $l += pow($m, $k); } echo $l, EOL; }
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.3.6
1 1 1 6
preferences:
239.17 ms | 404 KiB | 330 Q