I have a database table that contains numerous PDF blob files. I am attempting to combine all of the files into a single ZIP file that I can download and then print.

Please help!

<?php 
    include '../config.php';
    include '../connect.php';

    $session = $_GET['session'];

    $query = "SELECT $tbl_uploads.username, $tbl_uploads.description,
                     $tbl_uploads.type, $tbl_uploads.size, $tbl_uploads.content,
                     $tbl_members.session
    FROM $tbl_uploads
    LEFT JOIN $tbl_members
    ON $tbl_uploads.username = $tbl_members.username
    WHERE $tbl_members.session = '$session'";
    $result = mysql_query($query) or die('Error, query failed');


    $files = array();
    while(list($username, $description, $type, $size, $content) = 
     mysql_fetch_array($result)) {

        $files[] = "$username-$description.pdf";
    }

    $zip = new ZipArchive; 
    $zip->open('file.zip', ZipArchive::CREATE); 
    foreach ($files as $file) { 
      $zip->addFile($file); 
    } 
    $zip->close(); 

    header('Content-Type: application/zip'); 
    header('Content-disposition: attachment; filename=filename.zip'); 
    header('Content-Length: ' . filesize($zipfilename)); 
    readfile($zipname); 

    exit();


    ?>