如何使用PHP和MySQL将多选列表中的数据插入数据库

<form method="post" action="insert.php">
  <select name="options[]" multiple>
    <option value="option1">Option 1</option>
    <option value="option2">Option 2</option>
    <option value="option3">Option 3</option>
  </select>
  <input type="submit" value="Submit">
</form>

<?php
$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";

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接是否成功
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 设置字符集
$conn->set_charset("utf8");

// 获取选项值数组
$options = $_POST['options'];

// 遍历选项值数组并插入数据库
foreach ($options as $option) {
    $sql = "INSERT INTO 表名 (列名) VALUES ('$option')";

    if ($conn->query($sql) === TRUE) {
        echo "记录插入成功";
    } else {
        echo "Error: " . $sql . "<br>" . $conn->error;
    }
}

// 关闭连接
$conn->close();