Create Zip files and Download Zip file in PHP Code

Zip file downloading is used by websites. The most important and popular of theme is WordPress. They use Zip files for downloading plugins, themes and even their versions. They do it off course, dynamically. You just provide the location of the file and PHP will download it to the user for you. Actually HTTP headers have the main role in the downloading.

We make the headers using header function in PHP and the browser will take care of the rest. The file path that you provide must be the absolute path. These are the two variables where you provide information about the Zip file :

See also

• How to Force Download File Using PHP 2023

Download Zip File

In this file we will download files in zip format. when we are check the checkbox and click on the download button then download the file in dynamically from database.

create_zip_download.php

<?php
 // Database configuration    
 require "inc/config.php";

 if (isset($_POST['submit'])) {
  $ids  = implode(",", $_POST['checkbox']);
  $query = "SELECT * FROM `products` WHERE id IN ($ids)";
  $reqult = $con->query($query);

  //Files path
  $filePath = 'images/';
  $zipFileName = "myZipFile.zip";

        if ($reqult->num_rows > 0) {
            while ($row = $reqult->fetch_assoc()) {
             $filename = $row['image'];
             convertFileZipAndDownload($filename, $zipFileName, $filePath);
            }
        }
 }

 // CREATE FUNCTION FOR CREATE FILE IN ZIP AND DOWNLOAD
 function convertFileZipAndDownload($fileNames, $zipFileName, $filePath)
 {
     $zip = new \ZipArchive();
     //create the file and throw the error if unsuccessful
     if ($zip->open($zipFileName, ZIPARCHIVE::CREATE )!==TRUE) {
         exit("cannot open <$zipFileName>\n");
     }
     //add each files of $file_name array to archive
     foreach($fileNames as $files)
     {
         $zip->addFile($filePath.$files,$files);
     }
     $zip->close();
     
     //then send the headers to force download the zip file
     if(!empty($zipFileName) && file_exists($filePath)){ 
      // Define headers 
      header("Cache-Control: public"); 
      header("Content-Description: File Transfer"); 
      header("Content-Disposition: attachment; filename=$zipFileName"); 
      header("Content-Type: application/zip"); 
      header("Content-Transfer-Encoding: binary"); 
      // Read the file 
      readfile($zipFileName); 
      exit; 
  }else{ 
      echo 'The file does not exist.'; 
  }
 }

?>

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