3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "Hello World"; $array = str_split(str_replace(' ', '', $str), 1); $array = array_count_values($array); $keys = array_keys($array); array_multisort($array, $keys); $array = array_combine($keys, $array); print_r($array);
preferences:
56.06 ms | 402 KiB | 5 Q