Access denied for user ''@'localhost' (using password: NO)

[lingzhi0412]

Hi guys,
I have a trouble with error"Access denied for user ''@'localhost' (using password: NO)", Could someone give me some advice. Try to add new user but it does not work. Here is my scirpts:

function add_product($商品编号,      
                     $商品名称,     
                     $购买日期,     
                     $失效日期,     
                     $颜色尺寸规格,
                     $条形码,      
                     $购买价格,    
                     $税,       
                     $折扣,       
                     $汇率,       
                     $购买成本￥,    
                     $实际定价￥,    
                     $剩余库存总价￥,  
                     $预计运费￥,    
                     $参考销售价￥,   
                     $原库存,      
                     $新购数量,     
                     $销售数量,     
                     $现有库存,     
                     $商品种类,  
                     $存放地点,   
                     $更新时间,     
                     $备注        
                     ) 
{
    // add new product information into database
// return true or error message
 
  // connect to db
  //global $conn;
  $conn = db_connect();
 
 
  // check if product is alreday added in database
  //mysql_query("SET NAMES GBK"); //来设定MYSQL连接编码，保证页面申明编码与这里设定的连接编码一致（GBK是GB2312的扩展）。如果页面是UTF-8编码的话，可以用： 
  mysql_query("SET NAMES UTF8"); //注意是UTF8而不是一般用的UTF-8。假如页面申明的编码与数据库内部编码一致可以不设定连接编码。
  $result = $conn->query("select * from cosmetics where 商品编号='".$商品编号."'");
 
 
  if (!$result) {
    throw new Exception('无法校验产品编号是否存在系统，请联系系统管理员。');
  }
 
  if ($result->num_rows>0) {
    throw new Exception('相同商品编号已经存在系统，请输入其他商品编号，再次尝试。');
  }
 
 
  //$conn = db_connect();
 // if ok, put insert the data into database
  //mysql_query("SET NAMES GBK");  
  mysql_query("SET NAMES UTF8"); 
  $result = $conn->query("insert into cosmetics 
                         (商品编号,     
                          商品名称,     
                          购买日期,     
                          失效日期,     
                          颜色尺寸规格,   
                          条形码,      
                          购买价格,     
                          税,        
                          折扣,       
                          汇率,       
                          购买成本￥,    
                          实际定价￥,    
                          剩余库存总价￥,  
                          预计运费￥,    
                          参考销售价￥,   
                          原库存,      
                          新购数量,     
                          销售数量,     
                          现有库存,     
                          商品种类,     
                          存放地点,     
                          更新时间,     
                          备注)        
 
    values
                         ('".$商品编号."', 
                          '".$商品名称."',
                          '".$购买日期."',
                          '".$失效日期."',
                          '".$颜色尺寸规格."',
                          '".$条形码."',
                          '".$购买价格."',
                          '".$税."',
                          '".$折扣."',
                          '".$汇率."',
                          '".$购买成本￥."',
                          '".$实际定价￥."',
                          '".$剩余库存总价￥."',
                          '".$预计运费￥."',
                          '".$参考销售价￥."',
                          '".$原库存."',
                          '".$新购数量."',
                          '".$销售数量."'
                          '".$现有库存."',    
                          '".$商品种类."',    
                          '".$存放地点."',                           
                          '".$更新时间."',                              
                          '".$备注."'                            
                          )"
                          );
 
     ini_set('error_reporting', E_ALL|E_STRICT);
      ini_set('display_errors', 1);       
        mysql_query($result) or die(mysql_error());              
 
 
 
  if (!$result) {
    throw new Exception('添加商品失败，请检查输入信息格式正确后，再次尝试。');
  }
 
  return true;
  }
 
?>

[lingzhi0412]

require('header.php');
 require_once('product_fns.php');
 
 
 
  //create short variable name
  $商品编号=$_POST['商品编号'];
  $商品名称=$_POST['商品名称'];
  $购买日期=$_POST['购买日期'];
  $失效日期=$_POST['失效日期'];
  $颜色尺寸规格=$_POST['颜色尺寸规格'];
  $条形码=$_POST['条形码'];
  $购买价格=$_POST['购买价格'];
  $税=$_POST['税'];
  $折扣=$_POST['折扣'];
  $汇率=$_POST['汇率'];
  $购买成本=$_POST['购买成本'];
  $实际定价=$_POST['实际定价'];
  $剩余库存总价=$_POST['剩余库存总价'];
  $预计运费=$_POST['预计运费'];
  $参考销售价=$_POST['参考销售价'];
  $原库存=$_POST['原库存'];
  $新购数量=$_POST['新购数量'];
  $销售数量=$_POST['销售数量'];
  $现有库存=$_POST['现有库存'];
  $商品种类=$_POST['商品种类'];
  $存放地点=$_POST['存放地点'];
  $更新时间=$_POST['更新时间'];
  $备注=$_POST['备注'];
 
  // start session which may be needed later
  // start it now because it must go before headers
  session_start();
 try   {
    // check forms filled in
    if (!filled_out($_POST)) {
      throw new Exception('输入信息不完整，请返回重新尝试。');
    }
 
    // attempt to indsert product information into database
    // this function can also throw an exception    
 
    add_product($商品编号, 
                $商品名称, 
                $购买日期,
                $失效日期,
                $颜色尺寸规格,
                $条形码,
                $购买价格,
                $税,
                $折扣,
                $汇率,
                $购买成本,
                $实际定价,
                $剩余库存总价,
                $预计运费,
                $参考销售价,
                $原库存,
                $新购数量,
                $销售数量,
                $现有库存,
                $商品种类,
                $存放地点,
                $更新时间,
                $备注
                );              
 
 
   // end page
   do_html_footer();
  }
  catch (Exception $e) {
     do_html_header('错误:');
     echo $e->getMessage();
     exit;
  }
 
      // provide link to members page
    do_html_header('恭喜');
    echo '新商品添加成功。';
    do_html_product('member.php', 'Go to members page');
 
 require('footer.php');
 
 
?>

[onlinetuition]

Set password for user localhost and use password while connecting to database.

[Luuk]

i did not know that php could read chinese?