I wanted to convert an array with some css, js and html files into a zip file and save them in ownCloud (it has it's own framework but it's knowledge is not required.) What I am saving is an infinite loop of zip files, as in, a zip inside a zip so I can't even check that the code is working correctly or not. Please help. Here is the link to the code.

<?php
/* creates a compressed zip file */
$filename = $_GET["filename"];
function create_zip($files = array(),$destination = '',$overwrite = false) {
    //if the zip file already exists and overwrite is false, return false
    if(file_exists($destination) && !$overwrite) { return false; }
    //vars
    $valid_files = array();
    //if files were passed in...
    if(is_array($files)) {
        //cycle through each file
        foreach($files as $file => $local) {
            //make sure the file exists
            if(file_exists($file)) {
                $valid_files[$file] = $local;
            }
        }
    }
    //if we have good files...
    if(count($valid_files)) {
        //create the archive
        $zip = new ZipArchive();
        if($zip->open($destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {
            return false;
        }

        //add the files
        foreach($valid_files as $file => $local) {
            $zip->addFile($file, $local);
        }

        //debug
        //echo 'The zip archive contains ',$zip->numFiles,' files with a status of ',$zip->status;

        //close the zip -- done!
        $zip->close();

        //check to make sure the file exists
        return file_exists($destination);
    }
    else
    {
        return false;
    }
}

$files_to_zip = array(
        'apps/impressionist/css/mappingstyle.css' => '/css/mappingstyle.css',
        'apps/impressionist/css/style.css' => '/css/style.css',
        'apps/impressionist/js/jquery.js' => '/scripts/jquery.js',
        'apps/impressionist/js/impress.js' => '/scripts/impress.js',
        realpath('apps/impressionist/output/'.$filename.'.html') => $filename.'.html'

);
//if true, good; if false, zip creation failed
$result = create_zip($files_to_zip, $filename.'.zip');
    $save_file = OC_App::getStorage('impressionist');
    $save_file ->file_put_contents($filename.'.zip',$files_to_zip);
?>