3v4l.org

run code in 500+ PHP versions simultaneously
<?php $values = array_merge(range('a', 'z'), range('A', 'Z')); $characters = []; while (count($characters) < 5) { shuffle($values); $characters[] = $values[0]; } $alphaString = implode($characters); print $alphaString;

preferences:
50.1 ms | 789 KiB | 5 Q