php导入excel mysql

<?php
require 'vendor/autoload.php';

use PhpOffice\PhpSpreadsheet\IOFactory;

// 连接 MySQL 数据库
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 读取 Excel 文件
$inputFileName = 'example.xlsx';
$spreadsheet = IOFactory::load($inputFileName);
$worksheet = $spreadsheet->getActiveSheet();

// 获取数据范围
$highestRow = $worksheet->getHighestRow();
$highestColumn = $worksheet->getHighestColumn();

// 插入数据到 MySQL 数据库
for ($row = 1; $row <= $highestRow; $row++) {
    for ($column = 'A'; $column <= $highestColumn; $column++) {
        $cellValue = $worksheet->getCell($column . $row)->getValue();
        $sql = "INSERT INTO myTable (column1, column2, column3) VALUES ('$cellValue', '$cellValue', '$cellValue')";
        if ($conn->query($sql) === TRUE) {
            echo "新记录插入成功";
        } else {
            echo "Error: " . $sql . "<br>" . $conn->error;
        }
    }
}

$conn->close();
?>