Ошибка: Access denied for user 'www-data'@'localhost' (using password: NO)

if (($iCounter==$imageId)&&($field!='-2'))
{
    $file_name = "view.jpg";
    $content = Base64_Decode($field);
    echo "i = $i; content=".$content."<br>";                                    
    $file_size = strlen($content);
    $sql = "INSERT INTO ".$DBprefix."image (image_type, image_size, image_name, image_date,username) ";
    $sql.= "VALUES ('image/jpeg', '$file_size', '$file_name', NOW(),'$AuthUserName')";
    echo "<1>:".$sql;
    mysql_query($sql) or RegisterError(">> SQL_ERROR1",$sql."<br>".mysql_error());
    $fileid=mysql_insert_id();  
    $filename="../uploaded_images/".$fileid.".jpg";
    $fp = fopen($filename, 'w');
    fwrite($fp,$content);
    fclose($fp);
    $thumb = PhpThumbFactory::create($filename);
    $thumb->adaptiveResize(200, 200)->save($UPLOAD_DIR."/200x200/".$fileid.".jpg");
    $thumb = PhpThumbFactory::create($UPLOAD_DIR."/200x200/".$fileid.".jpg");
    $thumb->adaptiveResize(150, 150)->save($UPLOAD_DIR."/150x150/".$fileid.".jpg");
    $thumb = PhpThumbFactory::create($UPLOAD_DIR."/150x150/".$fileid.".jpg");
    $thumb->adaptiveResize(100, 100)->save($UPLOAD_DIR."/100x100/".$fileid.".jpg");
    $thumb = PhpThumbFactory::create($UPLOAD_DIR."/100x100/".$fileid.".jpg");
    $thumb->adaptiveResize(80, 80)->save($UPLOAD_DIR."/80x80/".$fileid.".jpg");
                                    
    array_push( $import_values, $fileid);                                   
    $flag = false;                              
                                    
}