Conversion ID cards in all formats

card.php

<?php

function cardList($card_id, $uppercase = false)
{
    if (!$card_id) return [];
    $arr = [];
    $arr[0] = $card_id;
    $arr[1] = implode(array_reverse(str_split($card_id, 2)));

    if (preg_match('/^[0-9]*$/', $card_id)) {
        $arr[2] = dechex(substr($card_id, 1));
        $arr[3] = implode(array_reverse(str_split($arr[2], 2)));
        $arr[4] = dechex(strlen($card_id) % 2 ? '0' . $card_id : $card_id);
        $arr[5] = implode(array_reverse(str_split($arr[4], 2)));
    }

    if ($uppercase) {
        $arr = array_map('strtoupper', $arr);
    }

    return $arr;
}

print_r(cardList('322B3DF6'));
print_r(cardList('94131203890'));
print_r(cardList('9841694710'));
print_r(cardList('4131203890'));
print_r(cardList('841694710'));