Hvad gør jeg forkert med det her Multiupload til database.

Hej alle sammen. Jeg har hentet den her multi-uploader som jeg ikke kan få til at gemme i databasen. den kan sagtens gemme i mappen som er sat til at blive gemt i.  Hvad gør jeg forkert har lavet en INSERT INTO på linie næsten i bunden.

scriptet er hentet her.

http://valums.com/ajax-upload/

på forhånd rigtig mange tak.



<?php
include("../client/config.php");

/**
* Handle file uploads via XMLHttpRequest
*/
class qqUploadedFileXhr {
    /**
    * Save the file to the specified path
    * @return boolean TRUE on success
    */
    function save($path) {   
        $input = fopen("php://input", "r");
        $temp = tmpfile();
        $realSize = stream_copy_to_stream($input, $temp);
        fclose($input);
       
        if ($realSize != $this->getSize()){           
            return false;
        }
       
        $target = fopen($path, "w");       
        fseek($temp, 0, SEEK_SET);
        stream_copy_to_stream($temp, $target);
        fclose($target);
       
        return true;
    }
    function getName() {
        return $_GET['qqfile'];
    }
    function getSize() {
        if (isset($_SERVER["CONTENT_LENGTH"])){
            return (int)$_SERVER["CONTENT_LENGTH"];           
        } else {
            throw new Exception('Getting content length is not supported.');
        }     
    } 
}

/**
* Handle file uploads via regular form post (uses the $_FILES array)
*/
class qqUploadedFileForm { 
    /**
    * Save the file to the specified path
    * @return boolean TRUE on success
    */
    function save($path) {
        if(!move_uploaded_file($_FILES['qqfile']['tmp_name'], $path)){
            return false;
        }
       
        return true;
    }
    function getName() {
        return $_FILES['qqfile']['name'];
    }
    function getSize() {
        return $_FILES['qqfile']['size'];
    }
}

class qqFileUploader {
    private $allowedExtensions = array();
    private $sizeLimit = 10485760;
    private $file;

    function __construct(array $allowedExtensions = array(), $sizeLimit = 10485760){       
        $allowedExtensions = array_map("strtolower", $allowedExtensions);
           
        $this->allowedExtensions = $allowedExtensions;       
        $this->sizeLimit = $sizeLimit;
       
        $this->checkServerSettings();     

        if (isset($_GET['qqfile'])) {
            $this->file = new qqUploadedFileXhr();
        } elseif (isset($_FILES['qqfile'])) {
            $this->file = new qqUploadedFileForm();
        } else {
            $this->file = false;
        }
    }
   
    private function checkServerSettings(){       
        $postSize = $this->toBytes(ini_get('post_max_size'));
        $uploadSize = $this->toBytes(ini_get('upload_max_filesize'));       
       
        if ($postSize < $this->sizeLimit || $uploadSize < $this->sizeLimit){
            $size = max(1, $this->sizeLimit / 1024 / 1024) . 'M';           
            die("{'error':'increase post_max_size and upload_max_filesize to $size'}");   
        }       
    }
   
    private function toBytes($str){
        $val = trim($str);
        $last = strtolower($str[strlen($str)-1]);
        switch($last) {
            case 'g': $val *= 1024;
            case 'm': $val *= 1024;
            case 'k': $val *= 1024;       
        }
        return $val;
    }
   
    /**
    * Returns array('success'=>true) or array('error'=>'error message')
    */
    function handleUpload($uploadDirectory, $replaceOldFile = FALSE){
        if (!is_writable($uploadDirectory)){
            return array('error' => "Server error. Upload directory isn't writable.");
        }
       
        if (!$this->file){
            return array('error' => 'No files were uploaded.');
        }
       
        $size = $this->file->getSize();
       
        if ($size == 0) {
            return array('error' => 'File is empty');
        }
       
        if ($size > $this->sizeLimit) {
            return array('error' => 'File is too large');
        }
       
        $pathinfo = pathinfo($this->file->getName());
        $filename = $pathinfo['filename'];
        //$filename = md5(uniqid());
        $ext = $pathinfo['extension'];

        if($this->allowedExtensions && !in_array(strtolower($ext), $this->allowedExtensions)){
            $these = implode(', ', $this->allowedExtensions);
            return array('error' => 'File has an invalid extension, it should be one of '. $these . '.');
        }
       
        if(!$replaceOldFile){
            /// don't overwrite previous files that were uploaded
            while (file_exists($uploadDirectory . $filename . '.' . $ext)) {
                $filename .= rand(10, 99);
            }
        }
       
        if ($this->file->save($uploadDirectory . $filename . '.' . $ext)){
            return array('success'=>true);
        } else {
            return array('error'=> 'Could not save uploaded file.' .
                'The upload was cancelled, or server error encountered');
        }
       
      mysqli_query($link, "INSERT INTO img (name) VALUES ('$filename')"); 
    }
   
     
}


       

// list of valid extensions, ex. array("jpeg", "xml", "bmp")
$allowedExtensions = array();
// max file size in bytes
$sizeLimit = 10 * 1024 * 1024;

$uploader = new qqFileUploader($allowedExtensions, $sizeLimit);
$result = $uploader->handleUpload('uploads/');
// to pass data through iframe you will need to encode all html tags
echo htmlspecialchars(json_encode($result), ENT_NOQUOTES);