3v4l.org

run code in 300+ PHP versions simultaneously
<?php $line = ''; $number = 5; for ($i = 1; $i <= $number; $i++) { $line = str_repeat('*', $i) . $line . '0'; echo $line . PHP_EOL; }
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
*0 ***00 ******000 **********0000 ***************00000
preferences:
126.77 ms | 407 KiB | 5 Q