根据选项标记值显示数据库行PHP HTML

<?php
// 连接数据库
$servername = "数据库服务器地址";
$username = "数据库用户名";
$password = "数据库密码";
$dbname = "数据库名称";

$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
    die("连接数据库失败: " . $conn->connect_error);
}

// 执行查询
$sql = "SELECT * FROM 表名 WHERE 选项标记字段 = '选项标记值'";
$result = $conn->query($sql);

// 处理结果
$rows = array();
if ($result->num_rows > 0) {
    while ($row = $result->fetch_assoc()) {
        $rows[] = $row;
    }
}

// 显示数据
foreach ($rows as $row) {
    echo "<p>姓名：" . $row["姓名"] . "</p>";
    echo "<p>年龄：" . $row["年龄"] . "</p>";
    // 其他字段...
}

// 关闭数据库连接
$conn->close();
?>