file Downloader

[code]
<?php
/**
 * file class
 * @author Ruud Verbij
 * @version 1.0
 */

class FileDownloader {

    private $fileName;
    private $fileSize;
    private $fileContent;

    /** constructor, needs filename to collect data */
    function __construct($fileName) {
        $this->fileName = $fileName;
    }

    /**
     * returns content of the file
     * @param save says if you want to save the content for easier access
     */
    public function getContent($save = false) {
        $content = file_get_contents($this->fileName);
        $this->fileContent = ($save) ? $content : "";
        $this->fileSize = strlen($content);
        return $content;
    }

    /** forces the download to start */
    public function forceDownload() {

        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/octetstream");
        header("Content-Disposition: attachment; filename=\"".$this->fileName."\"");

        header("Content-Transfer-Encoding: binary");
        header("Content-Length: ".$this->fileSize);
        set_time_limit(0);
        echo $this->getContent();
    }
}       
/* USAGE */                   
$file = new FileDownloader("http://www.okiedokie.nl/postcard/pictures/kusje.jpg");
$file->forceDownload();
?>
[/code]