How to implement data export operation in ThinkPHP6?

In web applications, data export is one of the very common functions. In ThinkPHP6, by using the third-party library PHPExcel, we can easily implement the data export function. This article will introduce how to use PHPExcel to implement data export operations in ThinkPHP6.

1. Install the PHPExcel library

First, we need to install the PHPExcel library. The library can be installed through Composer. The specific operations are as follows:

1. Run the following command in your project directory:

composer require phpoffice/phpexcel

2. After the installation is complete, you can Load the PHPExcel library through the following code:

use PhpOfficePhpSpreadsheetSpreadsheet;
use PhpOfficePhpSpreadsheetWriterXlsx;

2. Create an export method

Next, we need to create an export method. In this method, we need to get the data from the database and write it into an Excel file. Here is a basic example:

use PhpOfficePhpSpreadsheetSpreadsheet;
use PhpOfficePhpSpreadsheetWriterXlsx;

public function exportExcel(){
    // 获取数据
    $data = Db::table('table_name')->select();

    // 创建一份新的Excel文件
    $spreadsheet = new Spreadsheet();

    // 设置工作表名
    $spreadsheet->getActiveSheet()->setTitle('数据表格');

    // 将数据写入工作表中
    $spreadsheet->getActiveSheet()
        ->fromArray($data, null, 'A1');

    // 保存Excel文件
    $writer = new Xlsx($spreadsheet);
    $fileName = '数据表格.xlsx';
    header('Content-Disposition: attachment; filename="' . $fileName . '"');
    $writer->save('php://output');
}

In the above code, we first get the data from the database through the Db class. Then, we created a new Spreadsheet object and set the worksheet name to "Data Sheet". Finally, we write the data to the worksheet through the fromArray() method and save the Excel file. The process of outputting the Excel file to the browser is implemented through the header() function.

3. Add an export button

Finally, in the web page that needs to implement the export function, we need to add an export button so that the user can trigger the export operation when clicking the button. The following is the sample code:

<button type="button" onclick="location.href='<?php echo url("Controller/exportExcel"); ?>'">导出Excel</button>

In the above code, we use the url() function to get the URL address of the exported method and set it as the click event of the button. When the user clicks the button, the export method will be called and the Excel file will be output to the browser.

Conclusion

In this article, we have introduced how to use the PHPExcel library in ThinkPHP6 to implement the data export function. By using this technology, we can easily export data in the database to Excel files and provide users with a convenient way to interact with data.

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