get minimum dice flip count

min_dice_flip_count.php

<?php

function flip_count($arr) {
    $flip_count;
    $min_flip_count = 9999999;

    foreach ($arr as $value) {
        $flip_count = 0;
        foreach ($arr as $value2) {
            if ($value == $value2) {
                $flip_count += 0;
            } else if ($value + $value2 == 7) {
                $flip_count += 2;
            } else {
                $flip_count += 1;
            }
        }
        if ($flip_count < $min_flip_count) {
            $min_flip_count = $flip_count;
        }
    }

    return $min_flip_count;
}

echo flip_count([1,2,3]);