<?php
$folder_name = '';
$root_path_upto_folder = '';
$rootpath = getcwd();
if(DIRECTORY_SEPARATOR!=='/'){
	$rootpath = str_replace(DIRECTORY_SEPARATOR,'/',$rootpath);
}
if(!empty($rootpath)){
    $arr = explode('/', $rootpath);
    if(!empty($arr)){
        $folder_name = $arr[count($arr)-1];
        array_pop($arr);
        if(!empty($arr)){
        	$root_path_upto_folder = implode('/', $arr);
        }
    }
}

if(empty($folder_name) || empty($root_path_upto_folder)){
    echo 'Unable to process';
    die;
}

$the_folder = $root_path_upto_folder.'/'.$folder_name;
$zip_file_name = $folder_name.'.zip';


$download_file= true;
#$delete_file_after_download = true;

class FlxZipArchive extends ZipArchive {

    public function addDir($location, $name) {
        $this->addEmptyDir($name);

        $this->addDirDo($location, $name);
     }

    private function addDirDo($location, $name) {
        $name .= '/';
        $location .= '/';

        $dir = opendir ($location);
        while ($file = readdir($dir))
        {
            if ($file == '.' || $file == '..') continue;
            $do = (filetype( $location . $file) == 'dir') ? 'addDir' : 'addFile';
            $this->$do($location . $file, $name . $file);
        }
    }
}

$za = new FlxZipArchive;
$res = $za->open($zip_file_name, ZipArchive::CREATE);
if($res === TRUE)
{
    $za->addDir($the_folder, basename($the_folder));
    $za->close();
}
else
{
	echo 'Could not create a zip archive';
}

if ($download_file)
{
    ob_get_clean();
    header("Pragma: public");
    header("Expires: 0");
    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
    header("Cache-Control: private", false);
    header("Content-Type: application/zip");
    header("Content-Disposition: attachment; filename=" . basename($zip_file_name) . ";" );
    header("Content-Transfer-Encoding: binary");
    header("Content-Length: " . filesize($zip_file_name));
    readfile($zip_file_name);
}

if(file_exists($the_folder.'/'.$zip_file_name)){
    unlink($the_folder.'/'.$zip_file_name);
}
?>