3v4l.org

run code in 500+ PHP versions simultaneously
<?php var_dump(array_count_values(['1', '1']));
Output for 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array(1) { [1]=> int(2) }
preferences:
55.31 ms | 700 KiB | 4 Q