How to use PHP to develop data export and import modules in CMS

In CMS (content management system) development, data import and export modules are very important functions. When processing large amounts of data, these modules can quickly and accurately import data into or export data from the system. In PHP development, we can use some ready-made libraries and tools to complete these tasks.

1. Implementation of data export module

In PHP development, we can use the PHPExcel library to implement the data export module. PHPExcel is an open source PHP library that can be used to generate files in Excel documents, CSV, PDF and other formats. This library has very good support for Excel file formats, can support the export of Excel files in multiple formats, and is very simple to use.

1. Install the PHPExcel library

Before using the PHPExcel library, we need to install the library first. Before installation, we need to confirm whether the PHP version supports the operation of the PHPExcel library.

Download address: https://github.com/PHPOffice/PHPExcel

2. Sample code

The following is a sample code to generate an Excel file:

require_once 'PHPExcel/Classes/PHPExcel.php';
//New excel object
$objPHPExcel=new PHPExcel();
//Set excel Document properties
$objPHPExcel->getProperties()->setCreator("Yfcloud Studio")

->setLastModifiedBy("Yfcloud Studio")
->setTitle("Yfcloud Export Data")
->setSubject("Yfcloud Export Data")
->setDescription("Yfcloud Export Data")
->setKeywords("Yfcloud Export Data")
->setCategory("Yfcloud Export Data");

//Set the current sheet
$objPHPExcel->setActiveSheetIndex(0);
//Set header
$objPHPExcel->getActiveSheet()->SetCellValue("A1","ID");
$objPHPExcel->getActiveSheet()->SetCellValue(" B1","Name");
$objPHPExcel->getActiveSheet()->SetCellValue("C1","Gender");

//Set content
$objPHPExcel-> ;getActiveSheet()->SetCellValue("A2","1");
$objPHPExcel->getActiveSheet()->SetCellValue("B2","张三");
$objPHPExcel- >getActiveSheet()->SetCellValue("C2","Male");
$objPHPExcel->getActiveSheet()->SetCellValue("A3","2");
$objPHPExcel- >getActiveSheet()->SetCellValue("B3","李思");
$objPHPExcel->getActiveSheet()->SetCellValue("C3","女");

//Set the width of the column
$objPHPExcel->getActiveSheet()->getColumnDimension("A")->setWidth(10);
$objPHPExcel->getActiveSheet()->getColumnDimension ("B")->setWidth(20);
$objPHPExcel->getActiveSheet()->getColumnDimension("C")->setWidth(10);

//Set Row height
$objPHPExcel->getActiveSheet()->getRowDimension("1")->setRowHeight(20);

//Set the border
$styleArray = array(

'borders'=>array(
    'allborders'=>array(
        'style'=>PHPExcel_Style_Border::BORDER_THIN,
        'color'=>array('argb' => 'FF000000')
    )
)

);
$objPHPExcel->getActiveSheet()->getStyle('A1:C3')->applyFromArray($styleArray);

//Set font
$objPHPExcel->getActiveSheet()->getStyle('A1:C3')->getFont()->setName('Arial')

    ->setSize(10)
    ->setBold(true)
    ->setColor(new PHPExcel_Style_Color(PHPExcel_Style_Color::COLOR_WHITE));

//Output Excel file
header('Content-Type: application/vnd.ms-excel');
header('Content-Disposition: attachment; filename="data_export_'.date('YmdHis',time()).'.xls "');
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
$objWriter->save('php://output');
exit;
?>

The above example code generates an Excel file and outputs it to the browser, and users can use it by downloading or saving the file.

2. Implementation of data import module

In the CMS system, the data import module is also a very important function. In PHP development, we can implement the data import module through PHPExcel.

1. Prepare the import file

Before importing data, we need to prepare the file to be imported. The file format can be Excel, CSV, etc. The following is an example of the import file format:

ID Name Gender

1 Zhang Sannan
2 Li Sinu
3 Wang Wunan

2. Example Code

The following is a sample code to import an Excel file:

require_once 'PHPExcel/Classes/PHPExcel.php';
require_once 'PHPExcel /Classes/PHPExcel/IOFactory.php';

$filename = 'data_import.xlsx'; //Import file name

try {

$objPHPExcel = PHPExcel_IOFactory::load($filename);

} catch(Exception $ e) {

die('加载文件发生错误：'.pathinfo($filename,PATHINFO_BASENAME).': '.$e->getMessage());

}

$sheet = $objPHPExcel->getSheet(0); //Get the first sheet in the excel file

$highestRow = $sheet->getHighestRow(); //Get the total number of rows

for($i=2; $i<=$highestRow; $i )
{

$rowData = $sheet->rangeToArray('A'.$i.':C'.$i, NULL, TRUE, FALSE);
$id = $rowData[0][0];
$name = $rowData[0][1];
$sex = $rowData[0][2];

//此处可以添加将数据导入到数据库的代码

}

echo 'Import successful! ';
?>

The above example code imports an Excel file and imports the data in the file into an array. In practical applications, we can store the imported data in the database or perform other operations.

3. Summary

In CMS system development, data import and export functions are very important functions. In PHP development, we can use the PHPExcel library to implement these functions, and the method of use is also very simple. I hope that the introduction in this article can help PHP developers better apply data import and export modules in the development of CMS systems.

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