php 实现扑克牌比大小

好的，我可以为您提供一个更完整的 PHP 扑克牌比大小的代码示例：

/**
 * 将扑克牌字符串转换为数组
 * @param string $cardsStr 扑克牌字符串，如 "10H 9D AS KC"
 * @return array 扑克牌数组，如 array("10H", "9D", "AS", "KC")
 */
function convertCardsToArray($cardsStr) {
  $cards = explode(" ", $cardsStr);
  return $cards;
}

/**
 * 获取扑克牌的点数
 * @param string $card 扑克牌，如 "10H"
 * @return int 扑克牌点数，如 10
 */
function getCardValue($card) {
  $cardValues = array(
    'A' => 14,
    'K' => 13,
    'Q' => 12,
    'J' => 11,
    '10' => 10,
    '9' => 9,
    '8' => 8,
    '7' => 7,
    '6' => 6,
    '5' => 5,
    '4' => 4,
    '3' => 3,
    '2' => 2
  );
  return $cardValues[$card[0]];
}

/**
 * 判断扑克牌是否为同花
 * @param array $cards 扑克牌数组
 * @return bool 是否为同花
 */
function isFlush($cards) {
  $suits = array();
  foreach ($cards as $card) {
    $suits[] = $card[1];
  }
  return count(array_unique($suits)) == 1;
}

/**
 * 判断扑克牌是否为顺子
 * @param array $cards 扑克牌数组
 * @return bool 是否为顺子
 */
function isStraight($cards) {
  $cardValues = array();
  foreach ($cards as $card) {
    $cardValues[] = getCardValue($card);
  }
  sort($cardValues);
  $minValue = $cardValues[0];
  for ($i = 1; $i < count($cardValues); $i++) {
    if ($cardValues[$i] != $minValue + $i) {
      return false;
    }
  }
  return true;
}

/**
 * 获取扑克牌的组合类型
 * @param array $cards 扑克牌数组
 * @return string 组合类型，如 "同花顺"、"四条"、"葫芦"、"同花"、"顺子"、"三条"、"两对"、"一对"、"高牌"
 */
function getHandType($cards) {
  $cardCounts = array();
  foreach ($cards as $card) {
    $value = getCardValue($card);
    if (!isset($cardCounts[$value])) {
      $cardCounts[$value] = 0;
    }
    $cardCounts[$value]++;
  }
  arsort($cardCounts);
  $cardValues = array_keys($cardCounts);
  $cardCounts = array_values($cardCounts);
  $maxCount = $cardCounts[0];
  $secondCount = isset($cardCounts[1]) ? $cardCounts[1] : 0;
  $thirdCount = isset($cardCounts[2]) ? $cardCounts[2] : 0;
  $fourthCount = isset($cardCounts[3]) ? $cardCounts[3] : 0;
  $fifthCount = isset($cardCounts[4]) ? $cardCounts[4] : 0;
  $isFlush = isFlush($cards);
  $isStraight = isStraight($cards);
  if ($isFlush && $isStraight) {
    return "同花顺";
  } elseif ($maxCount == 4) {
    return "四条";
  } elseif ($maxCount == 3 && $secondCount == 2) {
    return "葫芦";
  } elseif ($isFlush) {
    return "同花";
  } elseif ($isStraight) {
    return "顺子";
  } elseif ($maxCount == 3) {
    return "三条";
  } elseif ($maxCount == 2 && $secondCount == 2) {
    return "两对";
  } elseif ($maxCount == 2) {
    return "一对";
  } else {
    return "高牌";
  }
}

/**
 * 比较两手扑克牌的大小
 * @param array $hand1 手牌1，如 array("10H", "9D", "AS", "KC")
 * @param array $hand2 手牌2，如 array("10H", "9D", "AS", "KC")
 * @return int 比较结果，1 表示手牌1大，-1 表示手牌2大，0 表示平局
 */
function compareHands($hand1, $hand2) {
  $hand1Type = getHandType($hand1);
  $hand2Type = getHandType($hand2);
  if ($hand1Type != $hand2Type) {
    $handTypes = array(
      "高牌" => 1,
      "一对" => 2,
      "两对" => 3,
      "三条" => 4,
      "顺子" => 5,
      "同花" => 6,
      "葫芦" => 7,
      "四条" => 8,
      "同花顺" => 9
    );
    return $handTypes[$hand1Type] > $handTypes[$hand2Type] ? 1 : -1;
  } else {
    $cardValues1 = array();
    $cardValues2 = array();
    foreach ($hand1 as $card) {
      $cardValues1[] = getCardValue($card);
    }
    foreach ($hand2 as $card) {
      $cardValues2[] = getCardValue($card);
    }
    rsort($cardValues1);
    rsort($cardValues2);
    for ($i = 0; $i < count($cardValues1); $i++) {
      if ($cardValues1[$i] > $cardValues2[$i]) {
        return 1;
      } elseif ($cardValues1[$i] < $cardValues2[$i]) {
        return -1;
      }
    }
    return 0;
  }
}

// 示例用法
$hand1 = convertCardsToArray("10H 9D AS KC");
$hand2 = convertCardsToArray("JD QS KH AC");
$result = compareHands($hand1, $hand2);
if ($result == 1) {
  echo "手牌1大";
} elseif ($result == -1) {
  echo "手牌2大";
} else {
  echo "平局";
}

这个示例代码中，我们实现了扑克牌字符串到数组的转换、获取扑克牌点数、判断扑克牌是否为同花或顺子、获取扑克牌的组合类型、比较两手扑克牌大小的功能。您可以通过调用这些函数来完成扑克牌比大小的操作。需要注意的是，这个示例代码只考虑了两手牌的比较，如果您需要比较多手牌，需要进行相应的扩展。