3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'hello'; for ($i=0;$i<strlen($string);$i++){ echo $string[$i] . "/n"; }
Output for 5.6.0 - 5.6.38, 7.0.0 - 7.0.31, 7.1.0 - 7.1.25, 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 - 8.3.7
h/ne/nl/nl/no/n
preferences:
215.77 ms | 403 KiB | 253 Q