3v4l.org

run code in 300+ PHP versions simultaneously
<?php $number = 5; $star = '*'; $stars = $star; for ($i = 0; $i < $number; ++$i, $stars .= $star ) { echo "$stars\n"; }
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
* ** *** **** *****
preferences:
88.86 ms | 1239 KiB | 4 Q