從PHP的foreach數組中打印值

Question

嗨，下面是我在我的程序中的代碼的一部分。

 .......................... 
     foreach($_POST['delz'] as $delz) 
     { 
      $QR = "SELECT bname, bsku FROM brands WHERE id='$delz'"; 
      $rr= mysqli_query($db,$QR) or die ("SQL Error"); 
      $roV = mysqli_num_rows($rr); 


     echo "<tr> 
     <td class='sc_five'> 
     $rr "; 
       ......... 

當我試圖打印的$rr我得到一個錯誤說Object of class mysqli_result could not be converted to string in C:\xam........誰能告訴我在哪裏，我都出了問題，我如何調整自己的價值觀？

編輯：

我已經得到了連接如下：

include ('../../connection/index.php'); 

Answer 1

試試這個：

foreach($_POST['delz'] as $delz) 
    { 
     $delz=mysqli_real_escape_string($db,$delz); 
     $QR = "SELECT bname, bsku FROM brands WHERE id='$delz'"; 
     $rr= mysqli_query($db,$QR) or die ("SQL Error"); 
     $roV = mysqli_num_rows($rr); 
     $r=$rr->fetch_assoc(); 
      foreach ($r as $rr) 
       echo "<tr><td class='sc_five'>".$rr['bname']." ".$rr['bsku'];