zipfile - How to zip a folder and download it using php?

Question

I have folder named "data". This "data" folder contains a file "filecontent.txt" and another folder named "Files". The "Files" folder contains a "info.txt" file. So it is a folder inside folder structure.

I have to zip this folder "data"(using php) along with the file and folder inside it, and download the zipped file.

I have tried the examples available at http://www.php.net/manual/en/zip.examples.php These examples did not work. My PHP version is 5.2.10

Please help.

I have written this code.

<?php
$zip = new ZipArchive;
if ($zip->open('check/test2.zip',ZIPARCHIVE::CREATE) === TRUE) {
    if($zip->addEmptyDir('newDirectory')) {
        echo 'Created a new directory';
    } else {
        echo 'Could not create directory';
    }
    $zipfilename="test2.zip";
    $zipname="check/test2.zip";

    header('Content-Type: application/zip');
    header('Content-disposition: attachment; filename=check/test1.zip');    //header('Content-Length: ' . filesize( $zipfilename));
    readfile($zipname);  //$zip->close(); } else { echo failed';
}
?>

file downloaded but could not unzip

Answer 1

You need to recursively add files in the directory. Something like this (untested):

function createZipFromDir($dir, $zip_file) {
    $zip = new ZipArchive;
    if (true !== $zip->open($zip_file, ZIPARCHIVE::CREATE | ZIPARCHIVE::OVERWRITE)) {
        return false;
    }
    zipDir($dir, $zip);
    return $zip;
}

function zipDir($dir, $zip, $relative_path = DIRECTORY_SEPARATOR) {
    $dir = rtrim($dir, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR;
    if ($handle = opendir($dir)) {
        while (false !== ($file = readdir($handle))) {
            if (file === '.' || $file === '..') {
                continue;
            }
            if (is_file($dir . $file)) {
                $zip->addFile($dir . $file, $file);
            } elseif (is_dir($dir . $file)) {
                zipDir($dir . $file, $zip, $relative_path . $file);
            }
        }
    }
    closedir($handle);
}

Then call $zip = createZipFromDir('/tmp/dir', 'files.zip');

For even more win I'd recommend reading up on the SPL DirectoryIterator here