Sort an array of 0s, 1s and 2s

count_sort.php

<?php
    $arr = array(0,2,1,2,0);
    $n = count($arr);
    
    $count = array_count_values($arr);
    $new_arr;
    for($j=0;$j<=2;$j++){
        for($i=0;$i<$count[$j];$i++){
            $new_arr[] = $j;
        }    
    }
    print_r($new_arr);
?>