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Question

所以基本上，我有一個函數getPayments（）。 此函數應執行查詢，從多個表（已聯接）中選擇。 這是我的代碼

function getPayments($userid, $schoolyear) {
    $stmt = $this->con->prepare("SELECT tbl_payment.payment_receipt_type AS RType, tbl_payment.payment_receipt_number AS RNumber, tbl_feetype.feetype_name AS FName, tbl_payment.payment_amount AS PAmount, tbl_month.month_date AS MDate, tbl_payment.payment_dateadded AS PAdded 
FROM tbl_payment
  INNER JOIN tbl_student ON tbl_student.student_id = tbl_payment.student_id 
  INNER JOIN tbl_schoolyear ON tbl_schoolyear.schoolyear_id = tbl_payment.schoolyear_id
  INNER JOIN tbl_feetype ON tbl_feetype.feetype_id = tbl_payment.feetype_id 
  INNER JOIN tbl_month ON tbl_month.month_id = tbl_payment.month_id   
  WHERE tbl_payment.schoolyear_id = ? AND tbl_payment.student_id = ? ORDER BY payment_dateadded DESC");

    $stmt->bind_param("ss", $userid, $schoolyear);
    $stmt->execute();
    $stmt->bind_result($RType, $RNumber, $FName, $PAmount, $MDate, $PAdded);

    $payments = array();

    while ($stmt->fetch()) {
        $temp = array();

        $temp['paymenttype'] = $RType;
        $temp['receiptnumber'] = $RNumber;
        $temp['feename'] = $FName;
        $temp['paymentamount'] = $PAmount;
        $temp['monthname'] = $MDate;
        $temp['paymentdate'] = $PAdded;

        array_push($payments, $temp);
    }

    return $payments;
}

在我的index.php文件中：

//getting payment details for a user
$app->get('/payment/{id}/{sy}', function (Request $request, Response $response) {
$route = $request->getAttribute('route');
// $userid = $request->getAttribute('id');
$userid = $route->getArgument('id');
$schoolyear = $route->getArgument('sy');
    // $schoolyear = $request->getAttribute('sy');
    $db = new DbOperation();
    $payments = $db->getPayments($userid, $schoolyear);
    $response->getBody()->write(json_encode(array("payments" => $payments)));
});

^這行代碼將從getPayment（）函數獲取返回的數組結果，然后將其編碼為json。

問題是，在Postman中測試了我的API之后，Postman只給了我這個結果

{"payments":[]} 

請幫我。 謝謝。 （對不起，我的英語不好）

Answer 1

找到答案。 我放錯了一些變量。

$stmt->bind_param("ss", $userid, $schoolyear); 應該寫為$stmt->bind_param("ss", $schoolyear, $userid); 。

現在一切正常。 謝謝。 :)

現在該線程已關閉。