我想在php中动态检索数据的2列之后重复行。

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

// 执行查询
$sql = "SELECT column1, column2, COUNT(*) as count FROM your_table GROUP BY column1, column2 HAVING count > 1";
$result = $conn->query($sql);

// 输出重复行
if ($result->num_rows > 0) {
    while ($row = $result->fetch_assoc()) {
        echo "重复行：column1 = " . $row["column1"] . ", column2 = " . $row["column2"] . "<br>";
    }
} else {
    echo "没有重复行";
}

// 关闭数据库连接
$conn->close();
?>