如何在PHP更新查询的帮助下添加相同的值？

<?php
// 连接数据库
$servername = "localhost";
$username = "your_username";
$password = "your_password";
$dbname = "your_database";

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

// 更新查询的帮助下添加相同的值
$sql = "UPDATE your_table SET column_name = column_name + 1 WHERE condition = 'your_condition'";
if ($conn->query($sql) === TRUE) {
    echo "记录更新成功";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

// 查询相同的值
$sql = "SELECT column_name FROM your_table WHERE condition = 'your_condition'";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // 输出每行数据
    while($row = $result->fetch_assoc()) {
        echo "相同的值为: " . $row["column_name"];
    }
} else {
    echo "没有找到相同的值";
}

$conn->close();
?>