create and download zip file using php

Question

i am trying to create a zip file(using php) for this i have written the following code:

$fileName = "1.docx,2.docx";
$fileNames = explode(',', $fileName);
$zipName = 'download_resume.zip';
$resumePath = asset_url() . "uploads/resume/";
//http://localhost/mywebsite/public/uploads/resume/

$zip = new ZipArchive();
if ($zip->open($zipName, ZIPARCHIVE::CREATE) !== TRUE) {
    echo json_encode("Cannot Open");
}

foreach ($fileNames as $files) {
    $zip->addFile($resumePath . $files, $files);
}
$zip->close();
header("Content-type: application/zip");
header("Content-Disposition: attachment; filename=".$zipName."");
header("Content-length: " . filesize($zipName));
header("Pragma: no-cache"); 
header("Expires: 0");
readfile($zipName);
exit;

however on a button click i am not getting anything..not even any error or message..

any help or suggestion would be a great help for me.. thanks in advance

Solution 1

Why not use the Zip Encoding Class in Codeigniter - it will do this for you

$name = 'mydata1.txt';
$data = 'A Data String!';

$this->zip->add_data($name, $data);

// Write the zip file to a folder on your server. Name it "my_backup.zip"
$this->zip->archive('/path/to/directory/my_backup.zip'); 

// Download the file to your desktop. Name it "my_backup.zip"
$this->zip->download('my_backup.zip');

https://www.codeigniter.com/user_guide/libraries/zip.html

Solution 2

1. What is asset_url() function? Try to use APPPATH constant istead this function:

   $resumePath = APPPATH."../uploads/resume/";

2. Add "exists" validation for file names:

   foreach ($fileNames as $files) {
       if (is_file($resumePath . $files)) {
           $zip->addFile($resumePath . $files, $files);
       }
   }

3. Add exit() after:

   echo json_encode("Cannot Open");

Also I think it's the better desision to use CI zip library User Guide. Simple example:

public function generate_zip($files = array(), $path)
{
    if (empty($files)) {
        throw new Exception('Archive should\'t be empty');
    }
    $this->load->library('zip');
    foreach ($files as $file) {
        $this->zip->read_file($file);
    }
    $this->zip->archive($path);
}

public function download_zip($path)
{
    if (!file_exists($path)) {
        throw new Exception('Archive doesn\'t exists');
    }
    $this->load->library('zip');
    $this->zip->download($path);
}