How to zip a folder in PHP

[subhasis_bubu]

Hi all,

I am facing a huge problem while trying to zip an entire folder using PHP
This is to be done in such a way that the entire structure of the folder do not get hampered that is all its subfolders and files remain the same when the zip file is unzipped.

Any sort of help is always welcome.

Subhasis

[spamonkey8]

Haven't tested it, but worth a look:
http://www.planet-source-code.com/vb...d=957&lngWId=8

[subhasis_bubu]

thanks spamonkey8,

but my problem is that I cannot zip a folder which has subfolders within it. I want to make the zip file in such a way that the structure is never hampeered. The code you suggested is for zipping a folder which contains files only and no sub folders.

Any way thanks for your response

[spamonkey8]

Well, you will need to write a little recursion (or a stack maybe) to navigate the tree and add all the files in certain directories individually.

Yes, I tested this and it is completely compatible with WinRAR.

[spamonkey8]

Example:

$zipfile = new zipfile();

//The page says "add the subdirectory ... important!", but
//in my tests it wasn't needed.  It may only be needed to make
//and empty directory
//$zipfile -> add_dir("data/");

$filedata = "(read your file into \$filedata)";
$zipfile -> add_file($filedata, "file.txt");

$filedata = file_get_contents('/input/a/file/called/script.php');
$zipfile -> add_file($filedata, "script.php");

$filedata = "foo to the bar";
$zipfile -> add_file($filedata, "subfolder/foo.bar");

file_put_contents('/path/to/output/test.zip', $zipfile -> file()); 

[subhasis_bubu]

thanks a lot !!
I am trying this out right now

[spamonkey8]

Even better! I took a bit of interest in this (I have the perfect use for it) and decided to go with it. You should add these two functions to the zipfile class and call add_dir_recur() as in the example to recursively add a directory, including all files and even empty folders. This is based upon the function du() I found on php.net a while ago (which calculates the total size of the files in a directory), then modified to track the number of files and dirs, then adapted for this use. This was written and fully tested for Windows servers but you can probably just reverse the slashes for Unix-compatability. Enjoy!

//Add me to your zipfile class
function add_dir_recur($location) {
    //Add a trailing slash
    if (substr($location, -1, 1) != '\\')
        $location .= '\\';
    return $this -> add_dir_recur_helper($location, $location);
}
//Add me to your zipfile class
function add_dir_recur_helper($root, $location) {
    if (!$location || !is_dir($location))
        return 0;

    $size = 0;
    $files = 0;
    $dirs = 0;

    $all = opendir($location);
    while ($file = readdir($all)) {
        if (is_dir($location.'\\'.$file) and $file != ".." and $file != ".") {
            $temp = $this -> add_dir_recur_helper($root, $location.'\\'.$file);
            $size += $temp['size'];
            $files += $temp['files'];
            $dirs += $temp['dirs'] + 1;
            
            $this -> add_dir(str_replace($root.'\\', '', $location.'\\'.$file).'/');
            
            unset($temp);
        } elseif (!is_dir($location.'\\'.$file)) {
            $stats = stat($location.'\\'.$file);
            $size += $stats['size'];
            $files++;
            
            $filedata = file_get_contents($location.'\\'.$file);
            if ($location == $root)
                $this -> add_file($filedata, $file);
            else
                $this -> add_file($filedata, str_replace($root.'\\', '', $location.'\\'.$file));
            
            unset($filedata);
        }
        unset($file);
    }
    closedir($all);
    unset($all);
    return array('size' => $size, 'files' => $files, 'dirs' => $dirs);
}

//Example usage:

$zipfile = new zipfile();

//It doesn't matter if there's a trailing slash
$info = $zipfile -> add_dir_recur('D:\test\path');

echo number_format($info['size'])." bytes in ".$info['files']." files and ".$info['dirs']." directories added to test.zip";

file_put_contents('D:\folder\test.zip', $zipfile -> file()); 

[spamonkey8]

In trying to make an inverse function based upon code from php.net's read-only zip file extension, I ran into some problems. The script hangs and then Apache won't work until the server is restarted. (The service can't even be stopped, started, or restarted!)

Is there a known issue with this?

[jackreacher]

Here's another option, Pear File_Archive:

http://poocl.la-grotte.org/index.php

Haven't used it before though.

[Ren]

Also look at http://ez.no/products/ez_components , they have Zip Archive handling classes.