Archiever class

gistfile1.php

<?php
class Archiver 
{
    protected $output = array();

    public function pack($source, $destination=null)
    {   

        $source = realpath($source);
        $sourcePath = dirname($source);
        $sourceBaseName = basename($source);

        if (is_null($destination)) {
            $destination = $sourcePath . DIRECTORY_SEPARATOR . $sourceBaseName . '.zip';
        } 
		
        $zip = new ZipArchive();
        $zip->open($destination, ZipArchive::CREATE);

        if (is_dir($source)) {
            $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($source), RecursiveIteratorIterator::SELF_FIRST);
            foreach ($iterator as $item) {
                if ($item->isDir()) {
                    if ($item->getRealpath() !== $sourcePath) {
                        $dir = str_replace($sourcePath . DIRECTORY_SEPARATOR, '', $item->getRealpath());
                        $zip->addEmptyDir(ltrim($dir, DIRECTORY_SEPARATOR)); 
                    }
                } else if ($item->isFile()) {
                    $this->output[] = str_replace($sourcePath . DIRECTORY_SEPARATOR, '', $item->getRealpath());
                    $file = str_replace($source . DIRECTORY_SEPARATOR, '', $item->getRealpath());
                    $zip->addFile($item->getRealpath(), $sourceBaseName . DIRECTORY_SEPARATOR . $file);   
                } 
            }
        } else if (is_file($source)) {
            $this->output[] = basename($source);
            $zip->addFile($source, basename($source));
        } 
        
        return $zip->close();
    }
    
    public function unpack($source, $destination=null) 
    {
        
        $source = realpath($source);
        $sourcePath = dirname($source);
        
		if (is_null($destination)) {
            $extractPath = realpath($sourcePath) . DIRECTORY_SEPARATOR;
        }
		
        $zip = new ZipArchive();
        
        if ($zip->open($source) === true) {
            $zip->extractTo($destination);
        } else { 
            return false;
		}

        return $zip->close();
    }
    
    public function getOutput()
    {
        return $this->output;
    }
    
}
// For test
$archiver = new Archiver();
$arch_status = $archiver->pack('./plugins/news', './news.zip'); // The second parameter is optional, if not specified saves in the source location directory. Specified directory must exist.
$arch_status = $archiver->unpack('./news.zip', './plugins_dir'); // The second parameter is optional, if not specified extract to the source location directory
var_dump($arch_status); // Return true on success