- var_dump: documentation ( source)
- array_values: documentation ( source)
- array_filter: documentation ( source)
<?php
$array = [0, 1, 2];
for($i = 0; $i <= 2; $i++){
$filtered = array_values(array_filter($array, function($elem) use ($i){
return ($elem == $i);
}));
var_dump($filtered);
}