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main.php
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<!DOCTYPE html>
<html>
<head>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<title>答题系统</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
body {
font-family: Arial, sans-serif;
background-image: linear-gradient(to top, #ff9a9e 0%, #fad0c4 99%, #fad0c4 100%);
/* background-color: #2184fc; */
/* background-color: lightblue; */
height: 100vh;
}
.container {
background-image: linear-gradient(to top, #d4fc79 0%, #96e6a1 100%);
padding: 20px;
max-width: 500px;
margin: 20px auto;
box-shadow: 0 0 10px rgba(0, 0, 0, 1);
border-radius: 5px;
text-align: center;
/* display: inline; */
position: relative; /* 设置相对定位 */
}
.container-a {
background-image: linear-gradient(to right, #fa709a 0%, #fee140 100%);
padding: 5px 5px;
max-width: 500px;
margin: 20px auto;
box-shadow: 0 0 10px rgba(0, 0, 0, 1);
border-radius: 5px;
text-align: left;
}
.container-b {
background-image: linear-gradient(to top, #dad4ec 0%, #dad4ec 1%, #f3e7e9 100%);
padding: 5px 5px;
max-width: 500px;
margin: 20px auto;
box-shadow: 0 0 10px rgba(0, 0, 0, 1);
border-radius: 5px;
text-align: left;
}
.container-c {
background-image: linear-gradient(to right, #eea2a2 0%, #bbc1bf 19%, #57c6e1 42%, #b49fda 79%, #7ac5d8 100%);
padding: 20px;
max-width: 500px ;
margin: 0px auto;
box-shadow: 0 0 10px rgba(0, 0, 0, 1);
border-radius: 5px;
text-align: center;
/* display: inline; */
position: relative; /* 设置相对定位 */
}
h1 {
color: #333;
margin-top: 0;
}
label {
display: inline-block;
width: 100px;
margin-bottom: 10px;
text-align: left;
}
input[type=text], input[type=password] {
background-image: linear-gradient(to left, #BDBBBE 0%, #9D9EA3 100%), radial-gradient(88% 271% at 0 0, rgba(255, 255, 255, 0.25) 0%, rgba(254, 254, 254, 0.25) 1%, rgba(0, 0, 0, 0.25) 100%), radial-gradient(50% 100% at 0 0, rgba(255, 255, 255, 0.30) 0%, rgba(0, 0, 0, 0.30) 100%); background-blend-mode: normal, lighten, soft-light; padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
resize: vertical;
}
input[type=submit] {
background-image: linear-gradient(to right, #6a11cb 0%, #2575fc 100%);
color: #fff;
padding: 10px 20px;
border: none;
border-radius: 4px;
cursor: pointer;
}
input[type=submit]:hover {
background-color: #45a049;
}
.error-message {
color: red;
font-size: 14px;
margin-top: 10px;
text-align: left;
}
.logo {
margin-bottom: 20px;
}
.question {
margin-top: 20px;
text-align: left;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
}
.score {
margin-top: 20px;
font-size: 18px;
}
.modal {
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 200px;
height: 100px;
background-color: white;
border: 1px solid black;
padding: 20px;
text-align: center;
}
</style>
</head>
<body>
<div class="container">
<h1>云计算竞赛系统</h1>
<!-- <img class="logo" src="hello.png" alt="Logo"> -->
<?php
session_start();
if (isset($_SESSION['username'])) {
$user = $_SESSION['username'];
} else {
// 用户未登录
}
// 连接数据库
$servername = "127.0.0.1";
$username = "jsxt";
$password = "password";
$dbname = "jsxt";
$conn = mysqli_connect($servername, $username, $password, $dbname);
if (isset($_GET['error'])) {
// 显示连接失败的消息
echo "<div style='color: red'>" . $_GET['error'] . "</div>";
}
// 检查连接
if (!$conn) {
die("连接失败: " . mysqli_connect_error());
}
// 查询 fenshu 表中的 dqid 字段
$result = mysqli_query($conn, "SELECT dqid FROM fenshu WHERE user = '$user'");
// 检查查询结果中是否有行数
if (mysqli_num_rows($result) > 0) {
// 如果有行数，则获取第一行的 dqid 值
$row = mysqli_fetch_assoc($result);
$dqid = $row["dqid"];
} else {
// 如果没有行数，则将 dqid 赋值为 1
$dqid = 1;
}
// echo $dqid;
//查询requests表中题目id最大多少
$sql = "SELECT MAX(id) as max_id FROM requests";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// 输出最大值并将其作为 $zdid 的值
$row = $result->fetch_assoc();
$zdid = $row["max_id"];
// echo $zdid;
} else {
// 如果查询结果为空，将 $zdid 的值设为 0
$zdid = 0;
}
// echo $zdid;
// 现在 $dqid 变量中包含了要么是查询结果中的 dqid 值，要么是默认值 1
if ($dqid > $zdid){
$query = "SELECT fenshu FROM fenshu WHERE user = '$user'";
// 执行查询
$result = mysqli_query($conn, $query);
$row = mysqli_fetch_assoc($result);
$fenshu = $row['fenshu'];
echo "<div class='question'>";
echo "<h3>$user 答题结束 $fenshu 分</h3>";
// echo $fenshu;
echo "</div>";
die();
}
// 查询题目
$sql = "SELECT id, requests, fenshu FROM requests WHERE id = '$dqid'";
$result = mysqli_query($conn, $sql);
// 渲染题目
if (mysqli_num_rows($result) > 0) {
while($row = mysqli_fetch_assoc($result)) {
$current_question_id = $row['id'];
$a_fenshu = $row['fenshu'];
echo "<div class='container-a'>";
echo "<h3>题目：" . $row['requests'] . "</h3>";
echo "<p>分数：" . $row['fenshu'] . "</p>";
echo "</div>";
}
// echo "<input type='hidden' name='requests_id' value='" . $current_question_id . "'>";
} else {
// echo "0 结果";
}
//查询当前分数
// echo $user;
$query = "SELECT fenshu FROM fenshu WHERE user = '$user'";
// 执行查询
$result = mysqli_query($conn, $query);
// 检查查询是否成功
if ($result) {
// 获取查询结果
$row = mysqli_fetch_assoc($result);
$fenshu = $row['fenshu'];
// 输出当前用户的分数
// echo "当前用户 $user 的分数是 $fenshu";
} else {
// echo "查询失败：" . mysqli_error($connection);
}
// $user=$_POST['username'];
// 关闭连接
//分数实时显示
$sql = "SELECT user, fenshu FROM fenshu ORDER BY fenshu DESC LIMIT 10";
$result = $conn->query($sql);
$scores = array();
if ($result->num_rows > 0) {
while($row = $result->fetch_assoc()) {
$scores[] = $row;
}
}
mysqli_close($conn);
?>
<link rel="stylesheet" href="style.css">
<form class="container" method="post" action="submit.php">
<label for="ip">IP 地址:</label>
<input type="text" id="ip" name="ip" required><br>
<label for="username">用户名:</label>
<input type="text" id="username" name="username" required><br>
<label for="password">密码:</label>
<input type="password" id="password" name="password" required><br>
<input type="hidden" id="requests_id" name="requests_id" value="<?php echo $current_question_id; ?>">
<input type="hidden" id="fenshu" name="fenshu" value="<?php echo $a_fenshu; ?>">
<input type="hidden" id="user" name="user" value="<?php echo $user; ?>">
<input type="submit" value="提交" id="submitBtn">
<script src="dengdai.js"></script>
</form>
<div id="score" class="container-b">得分：<?php echo $fenshu;?></div>
</div>
<div class="container-c">
<table align="center">
<tr>
<th width="42%" >排名</th>
<th width="42%">姓名</th>
<th width="42%">分数</th>
</tr>
<?php
// 使用循环结构输出分数排行榜
// 获得要排序的列
$column = array_column($scores, 'fenshu');
// 按照得分从高到低排序
array_multisort($column, SORT_DESC, $scores);
$rank = 1;
foreach ($scores as $score) {
echo "<tr>";
echo "<td>".$rank."</td>";
echo "<td>".$score['user']."</td>";
echo "<td>".$score['fenshu']."</td>";
echo "</tr>";
$rank++;
}
?>
</table>
</div>
</body>
</html>