Php zip a directory and automatically download

Posted Date:21-02-2017

This Post will explain how to download the directory using php.

Assumption value:

$sourecedir = 'images/';//this is an path of the folder name

$zip_file = 'file.zip';//this is an downloadable zip foler name

There two variable $sourcedir and $zipfile, $sourcedir varible mention the folder and $zipfile mention downloadable folder name.

First Initialize archive object

$zip = new ZipArchive();// Initialize archive object>
$zip = new ZipArchive();
$zip->open($zip_file, ZipArchive::CREATE | ZipArchive::OVERWRITE);

Second, Create Create recursive directory iterator is download all files with subfoler

$files = new RecursiveIteratorIterator(
    new RecursiveDirectoryIterator($rootPath)
);

Third,Use foreach loop to add the file to archive

foreach ($files as $name => $file)
{
    if (!$file->isDir())
    {
        $filePath = $file->getRealPath();
        $relativePath = substr($filePath, strlen($rootPath) + 1);
        $zip->addFile($filePath, $relativePath);
    }
}

Finally,Close the zip and add zip header in php ,read the file

$zip->close();
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($zip_file));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($zip_file));
readfile($zip_file);

If following all the steps and get final code like this

<?php
$dir = 'target';
$zip_file = 'file.zip';
$rootPath = realpath($dir);
$zip = new ZipArchive();
$zip->open($zip_file, ZipArchive::CREATE | ZipArchive::OVERWRITE);
$files = new RecursiveIteratorIterator(
    new RecursiveDirectoryIterator($rootPath)
);
foreach ($files as $name => $file)
{
    if (!$file->isDir())
    {
        $filePath = $file->getRealPath();
        $relativePath = substr($filePath, strlen($rootPath) + 1);
        $zip->addFile($filePath, $relativePath);
    }
}
$zip->close();
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($zip_file));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($zip_file));
readfile($zip_file);

?>