upload_xhr.php

<?php

// perfect for using as an upload php script for the dnd-file-upload scripts by pangratz
// found at https://github.com/pangratz/dnd-file-upload

class File_Streamer{
	private $_fileName;
	private $_contentLength;
	private $_destination;
	public function __construct(){
		if (!isset($_SERVER['HTTP_X_FILE_NAME']) 
			&& !isset($_SERVER['CONTENT_LENGTH'])) {
			throw new Exception("No headers found!");
		}
		
		$this->_fileName = $_SERVER['HTTP_X_FILE_NAME'];
		$this->_contentLength = $_SERVER['CONTENT_LENGTH'];
	}
    public function isValid(){
        if (($this->_contentLength > 0)) {
            return true;
        }
        return false;
    }
    public function setDestination($destination){
    	$this->_destination = $destination;
    }
    public function receive(){
        if (!$this->isValid()) {
        	throw new Exception('No file uploaded!');
        }
        file_put_contents(
        	$this->_destination . $this->_fileName, 
        	file_get_contents("php://input")
        );        
        return true;
    }
}

$destination_path = '/some/writable/path/';

$ft = new File_Streamer();
$ft->setDestination($destination_path);
$ft->receive();


?>

thx :-)