以下是使用PHP编写的五子棋人机对战游戏的简单示例代码：
<?php
// 定义棋盘大小和胜利条件
define('BOARD_SIZE', 15);
define('WIN_COUNT', 5);
// 初始化棋盘和当前下棋方
$board = array();
for ($i = 0; $i < BOARD_SIZE; $i++) {
$board[$i] = array_fill(0, BOARD_SIZE, 0);
}
$current_player = 1;
// 判断是否胜利
function checkWin($board, $x, $y, $player) {
// 横向判断
$count = 1;
for ($i = $x - 1; $i >= 0; $i--) {
if ($board[$i][$y] == $player) {
$count++;
} else {
break;
}
}
for ($i = $x + 1; $i < BOARD_SIZE; $i++) {
if ($board[$i][$y] == $player) {
$count++;
} else {
break;
}
}
if ($count >= WIN_COUNT) {
return true;
}
// 纵向判断
$count = 1;
for ($i = $y - 1; $i >= 0; $i--) {
if ($board[$x][$i] == $player) {
$count++;
} else {
break;
}
}
for ($i = $y + 1; $i < BOARD_SIZE; $i++) {
if ($board[$x][$i] == $player) {
$count++;
} else {
break;
}
}
if ($count >= WIN_COUNT) {
return true;
}
// 左上到右下斜向判断
$count = 1;
for ($i = $x - 1, $j = $y - 1; $i >= 0 && $j >= 0; $i--, $j--) {
if ($board[$i][$j] == $player) {
$count++;
} else {
break;
}
}
for ($i = $x + 1, $j = $y + 1; $i < BOARD_SIZE && $j < BOARD_SIZE; $i++, $j++) {
if ($board[$i][$j] == $player) {
$count++;
} else {
break;
}
}
if ($count >= WIN_COUNT) {
return true;
}
// 右上到左下斜向判断
$count = 1;
for ($i = $x - 1, $j = $y + 1; $i >= 0 && $j < BOARD_SIZE; $i--, $j++) {
if ($board[$i][$j] == $player) {
$count++;
} else {
break;
}
}
for ($i = $x + 1, $j = $y - 1; $i < BOARD_SIZE && $j >= 0; $i++, $j--) {
if ($board[$i][$j] == $player) {
$count++;
} else {
break;
}
}
if ($count >= WIN_COUNT) {
return true;
}
return false;
}
// 机器下棋
function aiMove($board, &$x, &$y) {
// 随机找一个空位下棋
do {
$x = rand(0, BOARD_SIZE - 1);
$y = rand(0, BOARD_SIZE - 1);
} while ($board[$x][$y] != 0);
}
// 处理用户点击事件
if (isset($_GET['x']) && isset($_GET['y'])) {
$x = intval($_GET['x']);
$y = intval($_GET['y']);
if ($board[$x][$y] == 0) {
$board[$x][$y] = $current_player;
if (checkWin($board, $x, $y, $current_player)) {
echo "Player $current_player Win!";
exit;
}
$current_player = 3 - $current_player;
aiMove($board, $x, $y);
$board[$x][$y] = $current_player;
if (checkWin($board, $x, $y, $current_player)) {
echo "Player $current_player Win!";
exit;
}
$current_player = 3 - $current_player;
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>五子棋人机对战</title>
<style>
table {
border-collapse: collapse;
}
td {
width: 30px;
height: 30px;
border: 1px solid #ccc;
text-align: center;
vertical-align: middle;
font-size: 20px;
cursor: pointer;
}
td.player1 {
color: red;
}
td.player2 {
color: blue;
}
</style>
</head>
<body>
<h1>五子棋人机对战</h1>
<table>
<?php for ($i = 0; $i < BOARD_SIZE; $i++): ?>
<tr>
<?php for ($j = 0; $j < BOARD_SIZE; $j++): ?>
<td class="player<?php echo $board[$i][$j]; ?>" onclick="move(<?php echo $i; ?>, <?php echo $j; ?>)"></td>
<?php endfor; ?>
</tr>
<?php endfor; ?>
</table>
<script>
function move(x, y) {
location.href = '?x=' + x + '&y=' + y;
}
</script>
</body>
</html>
该示例代码实现了一个简单的五子棋人机对战游戏，玩家和机器轮流下棋，先连成5个棋子的一方获胜。在HTML文件中，通过使用JavaScript来处理用户点击事件，将点击的坐标作为参数传递给PHP代码，PHP代码根据当前下棋方和机器的随机下棋来判断胜负，并更新棋盘状态。
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