PHP merge arrays with only NOT DUPLICATED values

Question

I need to merge two arrays into 1 array but what I need is to remove before the main data they b oth have in common (duplicated values i mean), I need only unique values whe

Answer 1

Faster solution:

function concatArrays($arrays){
    $buf = [];
    foreach($arrays as $arr){
        foreach($arr as $v){
            $buf[$v] = true;
        }
    }
    return array_keys($buf);
}


$array = concatArrays([$array1, $array2]);