Question

在测验应用程序中，我正在使用表单获取用户答案。我正在从数据库表中检索正确答案。我想将正确答案与用户答案进行比较，并计算出多少答案是正确的，以及多少答案是错误的。

这是我的表格：

<form id="question" class="" action="quiz_ans.php" method="post">
    <table id="quiz-question" align="center" class="row-border compact order-column stripe">
        <input class="form-control" type="hidden" name="NumberofQuestions" id="NumberofQuestions" value="<?php echo $NumberofQuestions; ?>">
        <thead>
            <?php
                if($QuizQuestions) {
                    $i=1;
                    foreach($QuizQuestions as $row):
              ?>
            <tr>
                <th><?php echo $i; ?>. <?php echo $row->Question; ?>
                    <br>
                <?php if(isset($row->Screenshot)) { ?>
                    <img src="<?php echo htmlspecialchars($row->Screenshot); ?>" alt="test" height="300" width="980">
                <?php } ?>
                </th>
            </tr>
        </thead>
        <tbody>
            <?php if(isset($row->Option1)) { ?>
            <tr class="info">
                <td><input type="radio" name="AnswerId[<?php echo $row->Id; ?>]" value="0"><?php echo $row->Option1; ?></td>
            </tr>
            <?php } ?>
            <?php if(isset($row->Option2)) { ?>
            <tr class="info">
                <td><input type="radio" name="AnswerId[<?php echo $row->Id; ?>]" value="1"> <?php echo $row->Option2; ?></td>
            </tr>
            <?php } ?>
            <?php if(isset($row->Option3)) { ?>
            <tr>
                <td><input type="radio" name="AnswerId[<?php echo $row->Id; ?>]" value="2"> <?php echo $row->Option3; ?></td>
            </tr>
            <?php } ?>
            <?php if(isset($row->Option4)) { ?>
            <tr>
                <td><input type="radio" name="AnswerId[<?php echo $row->Id; ?>]" value="3"><?php echo $row->Option4; ?></td>
            </tr>
            <?php } ?>
            <tr>
                <td><label for="AnswerReason">Why?</label><input class="form-control" type="text" name="AnswerReason[]" id="AnswerReason" value=""></td>
            </tr>
            <?php if(isset($row->Id)) { ?>
            <tr>
                <td><input class="form-control" type="hidden" name="QuestionId[]" id="QuestionId" value="<?php echo $row->Id; ?>"></td>
            </tr>
            <?php } ?>


        </tbody>

    <?php
        $i++;
      endforeach;
      }
    ?>
    </table>
    <br>
    <input type="submit" name="submit" value="Submit" class="btn btn-success">
</form>

我从表单提交中得到用户答案：

$NumberofQuestions = $_POST['NumberofQuestions'];
$ans = implode("", $_POST['AnswerId']);

我正在从数据库表中检索正确答案：

 try {
   $sql = "CALL spQuizAnswers(:quiz_num)";
   $stmt = $pdo->prepare($sql);
   $stmt->bindParam(':quiz_num', $quiz_num, PDO::PARAM_STR, 50);
   $stmt->execute();
   $QuizAns=$stmt->fetchAll();
   $stmt->closeCursor();
 } catch (PDOException $e) {
   die("Error occurred:" . $e->getMessage());
}

我正在比较用户的答案和正确答案：

for ($i=0; $i<$NumberofQuestions; $i++) {
    if($QuizAns) {
        foreach($QuizAns as $row):
            if($row->CorrectAns == $ans[$i]){
                $right++;
            } elseif($ans[$i] == 4){
                $not_answered++;
            } else {
                $wrong++;
            }

        endforeach;
    }
}

$CorrectAnswer = $right;
$WrongAnswer = $wrong;
$NotAnswered = $not_answered;
$TotalQuestion = $right+$wrong+$not_answered;

它没有给出正确的计算。 对于5个问题，它给出了$ TotalQuestion = 25。 如何获得正确的计算？任何帮助将不胜感激。

PHP数组和foreach组合计算

0 个答案: