開捕致命錯誤：類mysqli_result的對象不能轉換爲字符串

我想創建從我ebank驗證頁面，電子銀行發送波紋管參數：開捕致命錯誤：類mysqli_result的對象不能轉換爲字符串

$Status = $_POST['status']; 
$Refnumber = $_POST['refnumber']; 
$Resnumber = $_POST['resnumber']; 
     $res = $client->VerifyPayment(array("MerchantID" => $MerchantID , "Password" =>$Password , "Price" =>$Price,"RefNum" =>$Refnumber)); 
$Status = $res->verifyPaymentResult->ResultStatus; 
$PayPrice = $res->verifyPaymentResult->PayementedPrice;

我想添加量隨波紋管用戶數據庫代碼：

$MerchantID = 'xxxxx'; 
$Password = 'xxxxx'; 




if(isset($_POST['status']) && $_POST['status'] == 100){ 



    $Status = $_POST['status']; 
    $Refnumber = $_POST['refnumber']; 
    $Resnumber = $_POST['resnumber']; 
    $price = $db2->query("SELECT `price` FROM `user_payments` WHERE `invoice_number` = '$Resnumber'"); 

    $client = new SoapClient('http://merchant.parspal.com/WebService.asmx?wsdl');  
    $res = $client->VerifyPayment(array("MerchantID" => $MerchantID , "Password" =>$Password , "Price" =>$Price,"RefNum" =>$Refnumber)); 
    $Status = $res->verifyPaymentResult->ResultStatus; 
    $PayPrice = $res->verifyPaymentResult->PayementedPrice; 

    $db2->query("UPDATE `user_payments` SET `done` = '1' , `refid` = '$Refnumber' WHERE `invoice_number` = '$Resnumber'"); 
    $new_balance = $this->user->info->balance + $PayPrice; 
    $uid = $this->user->info->id; 
    $fee = $PayPrice; 
    $time = time(); 
    $db2->query("UPDATE `users` SET `balance` = '$new_balance' WHERE `id` = '$uid' "); 
    $db2->query("INSERT INTO `user_balance_report` (`uid`,`type`,`fee`,`msg`,`date`)VALUES('$uid','3','+".$fee."','your code: ".$Resnumber."','$time')"); 
    $D->user_purchase = "success <br>cost $fee Added in your account."; 
    $this->user->sess['LOGGED_USER'] = $this->network->get_user_by_id($this->user->id, TRUE); 
    $this->user->info = & $this->user->sess['LOGGED_USER']; 
    }

，但我有看到這個代碼時，從銀行回來：開捕致命錯誤：類mysqli_result的對象無法轉換爲字符串這一行：

 $res = $client->VerifyPayment(array("MerchantID" => $MerchantID , "Password" =>$Password , "Price" =>$Price,"RefNum" =>$Refnumber));

來源

2014-02-08 user3261715

你的價格變量是一個MySQL的數據集對象，提取物價格從它的字符串，你會好 –

你能更解釋我好嗎？我怎麼能夠？ :) – user3261715

不知道你用什麼類來處理數據庫操作，但通常你會得到一組對象/數組，其中每一個看起來像'array（'id'=> 1，'price'=> 9.99 ）'，通過執行' - > query（）'，所以你只需要提取它。合理？ –

我應該用

$price = $db2->fetch_field("SELECT `price` FROM `user_payments` WHERE `invoice_number` = '$Resnumber'");

來源

2014-02-20 01:37:00 user3261715

開捕致命錯誤：類mysqli_result的對象不能轉換爲字符串

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