php纸牌编程

PHP纸牌编程是指使用PHP语言编写纸牌游戏的程序。纸牌游戏是一种常见的娱乐活动，通过使用一副或多副纸牌进行游戏。在PHP纸牌编程中，可以使用PHP语言的各种特性和函数来实现纸牌游戏的规则和逻辑。

以下是一个简单的PHP纸牌编程的示例，实现了一个简单的纸牌游戏“21点”：

<?php

// 定义纸牌点数
$cards = array(
    "A" => 1,
    "2" => 2,
    "3" => 3,
    "4" => 4,
    "5" => 5,
    "6" => 6,
    "7" => 7,
    "8" => 8,
    "9" => 9,
    "10" => 10,
    "J" => 10,
    "Q" => 10,
    "K" => 10
);

// 初始化玩家和庄家的手牌
$playerHand = array();
$dealerHand = array();

// 发牌
function dealCard(&$hand) {
    global $cards;
    $card = array_rand($cards);
    $hand[] = $card;
}

// 计算手牌点数
function calculateHand($hand) {
    global $cards;
    $total = 0;
    $aces = 0;
    foreach ($hand as $card) {
        $total += $cards[$card];
        if ($card == "A") {
            $aces++;
        }
    }
    while ($total <= 11 && $aces > 0) {
        $total += 10;
        $aces--;
    }
    return $total;
}

// 发两张牌给玩家和庄家
dealCard($playerHand);
dealCard($dealerHand);
dealCard($playerHand);
dealCard($dealerHand);

// 玩家决定是否继续要牌
while (calculateHand($playerHand) < 21) {
    $choice = readline("Do you want to hit or stand? (h/s) ");
    if ($choice == "h") {
        dealCard($playerHand);
    } else if ($choice == "s") {
        break;
    }
}

// 庄家继续要牌直到点数大于等于17
while (calculateHand($dealerHand) < 17) {
    dealCard($dealerHand);
}

// 输出玩家和庄家的手牌和点数
echo "Player's Hand: " . implode(", ", $playerHand) . " (" . calculateHand($playerHand) . ")\n";
echo "Dealer's Hand: " . implode(", ", $dealerHand) . " (" . calculateHand($dealerHand) . ")\n";

// 判断输赢
$playerScore = calculateHand($playerHand);
$dealerScore = calculateHand($dealerHand);
if ($playerScore > 21) {
    echo "Player busts. Dealer wins.\n";
} else if ($dealerScore > 21) {
    echo "Dealer busts. Player wins.\n";
} else if ($playerScore > $dealerScore) {
    echo "Player wins.\n";
} else if ($dealerScore > $playerScore) {
    echo "Dealer wins.\n";
} else {
    echo "It's a tie.\n";
}

这个示例演示了一个简单的21点游戏，玩家和庄家通过要牌来接近或达到21点，最后比较点数决定输赢。这个示例使用了PHP的数组、循环、条件语句等基本语法和函数来实现游戏的逻辑。