3v4l.org

run code in 500+ PHP versions simultaneously
<?php $int = 2; $str = "lol"; for ($i = 1; $i < $int; $i++) { $str .= $str; } var_dump($str);
Output for 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(6) "lollol"
preferences:
40.77 ms | 700 KiB | 4 Q