ZipArchive::addEmptyDir

Add folder and sub-directories to zip archive.

<?php 
$archive_name = "archive.zip"; // name of zip file
$archive_folder = "folder"; // the folder which you archivate

$zip = new ZipArchive; 
if ($zip -> open($archive_name, ZipArchive::CREATE) === TRUE) 
{ 
    $dir = preg_replace('/[\/]{2,}/', '/', $archive_folder."/"); 
    
    $dirs = array($dir); 
    while (count($dirs)) 
    { 
        $dir = current($dirs); 
        $zip -> addEmptyDir($dir); 
        
        $dh = opendir($dir); 
        while($file = readdir($dh)) 
        { 
            if ($file != '.' && $file != '..') 
            { 
                if (is_file($file)) 
                    $zip -> addFile($dir.$file, $dir.$file); 
                elseif (is_dir($file)) 
                    $dirs[] = $dir.$file."/"; 
            } 
        } 
        closedir($dh); 
        array_shift($dirs); 
    } 
    
    $zip -> close(); 
    echo 'Archiving is sucessful!'; 
} 
else 
{ 
    echo 'Error, can\'t create a zip file!'; 
} 
?>

Here's a stack-based way to zip a directory. No recursion, no function, no class:

<?php
$zip = new ZipArchive();
$zip->open('test.zip', ZipArchive::CREATE);

$dirName = 'test';

if (!is_dir($dirName)) {
    throw new Exception('Directory ' . $dirName . ' does not exist');
}

$dirName = realpath($dirName);
if (substr($dirName, -1) != '/') {
    $dirName.= '/';
}

/*
 * NOTE BY danbrown AT php DOT net: A good method of making
 * portable code in this case would be usage of the PHP constant
 * DIRECTORY_SEPARATOR in place of the '/' (forward slash) above.
 */

$dirStack = array($dirName);
//Find the index where the last dir starts
$cutFrom = strrpos(substr($dirName, 0, -1), '/')+1;

while (!empty($dirStack)) {
    $currentDir = array_pop($dirStack);
    $filesToAdd = array();

    $dir = dir($currentDir);
    while (false !== ($node = $dir->read())) {
        if (($node == '..') || ($node == '.')) {
            continue;
        }
        if (is_dir($currentDir . $node)) {
            array_push($dirStack, $currentDir . $node . '/');
        }
        if (is_file($currentDir . $node)) {
            $filesToAdd[] = $node;
        }
    }

    $localDir = substr($currentDir, $cutFrom);
    $zip->addEmptyDir($localDir);
    
    foreach ($filesToAdd as $file) {
        $zip->addFile($currentDir . $file, $localDir . $file);
    }
}

$zip->close();
?>

The <code>addEmptyDir</code> method does not handle permissions bits and directory <code>mtime</code>. These need to be set separately after the directory has been created in the Zip Archive.

Note that setting the <code>mtime</code> is only available since PHP >= 8.0, so it will stay the current timestamp of the <code>addEmptyDir</code> call with PHP 7.4 and below.

Here is a function to fix both permissions and <code>mtime</code> of a directory in a Zip Archive.

<pre><code lang="php">
function fixDirAttributes(ZipArchive $zip, string $path, string $name)
{
    // Gets the index of the directory in the Zip archive
    $indexInZip = $zip->locateName('/' === mb_substr($name, -1) ? $name : $name . '/');
    if (false !== $indexInZip) { // Name found
        if (method_exists($zip, 'setMtimeIndex')) {             // PHP >= 8.0.0, PECL zip >= 1.16.0
            $zip->setMtimeIndex($indexInZip, filemtime($path)); // Fixes the mtime of the directory
        }
        $filePerms = fileperms($path); // Gets permissions on the directory
        if (false !== $filePerms) { // filePerms supported
            $attr = $filePerms << 16; // Left-shift permission to git the external attributes value
            $zip->setExternalAttributesIndex($indexInZip, \ZipArchive::OPSYS_UNIX, $attr);
        }
    }
}
</pre></code>

I have modified thomas dot rubbert at yahoo dot de a little bit

$uploads_dir =storage_path().'/app/public/files/' ;
                    if(!file_exists($uploads_dir)){
                        mkdir($uploads_dir,0777,true);
                    }
                    $zip_file=$uploads_dir.'download.zip';
                    if(file_exists($zip_file)){
                        unlink($zip_file);
                    }
                    $zip = new \ZipArchive();
                    if (!$zip->open($zip_file, \ZIPARCHIVE::CREATE)) {
                        http_response_code(501);
                        echo 'Zip creation failed';
                        die();
                    }
                    $img=$uploads_dir.'img';
                    
                    $dirName = realpath($img);
                    if (substr($dirName, -1) != DIRECTORY_SEPARATOR) {
                        $dirName.= DIRECTORY_SEPARATOR;
                    }
                    $dirStack = array($dirName);
                    //Find the index where the last dir starts
                    $cutFrom = strrpos(substr($dirName, 0, -1), DIRECTORY_SEPARATOR)+1;    
                    while (!empty($dirStack)) {
                        $currentDir = array_pop($dirStack);
                        $filesToAdd = array();
                        $dir = dir($currentDir);
                        while (false !== ($node = $dir->read())) {
                            if (($node == '..') || ($node == '.')) {
                                continue;
                            }
                            if (is_dir($currentDir . $node)) {
                                array_push($dirStack, $currentDir . $node . DIRECTORY_SEPARATOR);
                            }
                            if (is_file($currentDir . $node)) {
                                $filesToAdd[] = $node;
                            }
                        }
                        $localDir =str_replace(DIRECTORY_SEPARATOR,'/',substr($currentDir, $cutFrom));
                        $zip->addEmptyDir($localDir);
                        foreach ($filesToAdd as $file) {
                            $zip->addFile($currentDir . $file, $localDir . $file);
                        }
                    }
// any additional files
                    $db=$uploads_dir.'databse.db'; 
                    //$zip->addFromString(basename($db), file_get_contents($db));
                    $zip->addFile($db, basename($db));
                    $zip->close();

addEmptyDir doesn't exist now,
use $zip->addFile($file, $dir.$fichier);

nothing on the net about this, 

addEmptyDir work on Ubuntu but not on Debian Etch

There is kind of a bug in the method
ZipArchive::addFile
which affects the class ZipFolder below.
It is related to the numer of max filehandles of the OS.

As workaround add a file-counter to the class and close + reopen the archive if a certain number of files (directories count as files!) is reached.

For more details see here:
http://de.php.net/manual/en/function.ziparchive-addfile.php
or go directly here
http://bugs.php.net/bug.php?id=40494
or here
http://pecl.php.net/bugs/bug.php?id=9443

On PHP >5.4, This function will create a file, not a directory.

For instance:

   $zip->addEmptyDir ( 'path/to/dir/' );

will create the folders "path/", and "path/to/", and a dummy 0-byte file named "dir" in the latter.
If then we add a file to that dir, say like this:

   $zip->addFromString ( 'path/to/dir/file.txt', $data );  

the result will be a SEPARATE folder named "dir" next to the dummy "dir" file. The "dir" folder will contain the file "file.txt".

This was tested on an APACHE server running PHP 5.4

I've brought a little modification to dayjo's code, so it wouldn't re-create the whole structure of your working drive in the zip file:

<?php
// Function to recursively add a directory,
// sub-directories and files to a zip archive
function addFolderToZip($dir, $zipArchive, $zipdir = ''){
    if (is_dir($dir)) {
        if ($dh = opendir($dir)) {

            //Add the directory
            if(!empty($zipdir)) $zipArchive->addEmptyDir($zipdir);
           
            // Loop through all the files
            while (($file = readdir($dh)) !== false) {
           
                //If it's a folder, run the function again!
                if(!is_file($dir . $file)){
                    // Skip parent and root directories
                    if( ($file !== ".") && ($file !== "..")){
                        addFolderToZip($dir . $file . "/", $zipArchive, $zipdir . $file . "/");
                    }
                   
                }else{
                    // Add the files
                    $zipArchive->addFile($dir . $file, $zipdir . $file);
                   
                }
            }
        }
    }
}
?>

If you don't specify the third parameter (zipdir), the directory you're adding will be added at the root of the zip file.

D.Jann

Here's a simple recurring function to add a directory, all sub-directories and all files to an already created zip file;

<?php
// Function to recursively add a directory,
// sub-directories and files to a zip archive
function addFolderToZip($dir, $zipArchive){
    if (is_dir($dir)) {
        if ($dh = opendir($dir)) {

            //Add the directory
            $zipArchive->addEmptyDir($dir);
            
            // Loop through all the files
            while (($file = readdir($dh)) !== false) {
            
                //If it's a folder, run the function again!
                if(!is_file($dir . $file)){
                    // Skip parent and root directories
                    if( ($file !== ".") && ($file !== "..")){
                        addFolderToZip($dir . $file . "/", $zipArchive);
                    }
                    
                }else{
                    // Add the files
                    $zipArchive->addFile($dir . $file);
                    
                }
            }
        }
    }
}
?>

Would be nice to see more input on these functions :)

Dayjo