Playing Cards

<?php

$playersCards = [];

$cmd = explode(': ', readline());

while ($cmd[0] !== 'JOKER') {
    $player = $cmd[0];
    $cards = explode(', ', $cmd[1]);

    if (!key_exists($player, $playersCards)) {
        $playersCards[$player] = [];
    }
    for ($i = 0; $i < count($cards); $i++) {
        if (!in_array($cards[$i], $playersCards[$player])) {
            $playersCards[$player][] = $cards[$i];
        }
    }

    $cmd = explode(': ', readline());
}

foreach ($playersCards as $player => $hand) {
    $sumCard = 0;
    $sumHand = 0;
    foreach ($hand as $card) {
        if (strlen($card) === 3) {
            $sumCard += 10;
            if ($card[2] === 'S') {
                $sumCard *= 4;
            } elseif ($card[2] === 'H') {
                $sumCard *= 3;
            } elseif ($card[2] === 'D') {
                $sumCard *= 2;
            }
        } else {
            for ($j = 0; $j < strlen($card); $j++) {
                if (is_numeric($card[$j])) {
                    $sumCard += intval($card[$j]);
                } else {
                    switch ($card[$j]) {
                        case 'S':
                            $sumCard *= 4;
                            break;
                        case 'H':
                            $sumCard *= 3;
                            break;
                        case 'D':
                            $sumCard *= 2;
                            break;
                        case 'J':
                            $sumCard += 11;
                            break;
                        case 'Q':
                            $sumCard += 12;
                            break;
                        case 'K':
                            $sumCard += 13;
                            break;
                        case 'A':
                            $sumCard += 14;
                            break;
                    }
                }
            }
        }
        $sumHand += $sumCard;
        $sumCard = 0;
    }
    echo "$player: $sumHand" . PHP_EOL;
}