<?php
$proj_root = $_SERVER['DOCUMENT_ROOT'].'/cms/';
$tmp_folder = $proj_root.'temp/';

$dir_name = $_GET['dir_name'];
if(isset($_GET['sub_dir_name']))
{
    $zipname = "Documents-".$_GET['sub_dir_name'].".zip";
}else{
    $zipname = "Documents.zip";
}
$files = scandir($dir_name,1);

if(is_array($files)) {
    foreach($files as $key=>$file) {
        if(file_exists($dir_name."/".$file)) {
            if(($file != ".") && ($file != ".."))
            {
                $valid_files[] = $dir_name."/".$file;
            }
        }
    }
}
if(count($valid_files > 0)){
    $zip = new ZipArchive();
    $zip_name = $zipname;
    if($zip->open($tmp_folder.$zip_name, ZIPARCHIVE::CREATE)!==TRUE){
        $error .= "* Sorry ZIP creation failed at this time";
    }

    foreach($valid_files as $file){
        echo basename($file);
        $zip->addFile($file,basename($file));
    }
    $zip->close();
    if(file_exists($tmp_folder.$zip_name)){
        // force to download the zip
        header("Pragma: public");
        header("Expires: 0");
        header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
        header("Cache-Control: private",false);
        header('Content-type: application/zip');
        header('Content-Disposition: attachment; filename="'.$zip_name.'"');
        readfile($tmp_folder.$zip_name);
        // remove zip file from temp path
        unlink($tmp_folder.$zip_name);
    }

} else {
    echo "No valid files to zip";
    exit;
}
?>