セッション変数から値を取得できません。

Question

次のページを作成しました。 1. questions.php 2のfunctions.php questions.phpフォーム上の質問フォームがのfunctions.phpに提出されたとき、私は、ページfunction.phpのセッション変数の値を設定している

3. result.phpコードが実行され、私はresult.phpページにセッション変数の値をエコーし​​ます。しかし、私はセッション値result.theセッション値を得ることができません空の結果です。anyoneヘルプしてください。

 functions.php 

    if(isset($_POST['question_form'])) 
    { 
    global $conn; 
    if (!isset($_SESSION['result'])) { 
    $result = 0; 
    $_SESSION['result'] = 0; 
    } 
    if (!isset($_SESSION['attempted'])) { 
    $attempted = 0; 
    $_SESSION['attempted'] = 0; 
    } 
    $resArray = array(); 
    $resArray['message'] = ''; 
    $resArray['status'] = ''; 
    $no = $_POST['no']; 
    $postedAnswer = $_POST['answer_'.$no]; 
    $question_id = $_POST['question_id']; 
    $subject_id = $_POST['subject_id']; 

    $sql = "SELECT True_answer FROM question WHERE QuestionId = '$question_id' AND SubjectId = '$subject_id'"; 
    $result = mysqli_query($conn, $sql); 
    $row = mysqli_fetch_assoc($result); 

    $True_answer = $row['True_answer']; 

    if($postedAnswer === $True_answer) 
    { 

     $result = $_SESSION['result']; 
     $result++; 
     $_SESSION['result'] = $result; 
    } 
     $attempted = $_SESSION['attempted']; 
     $attempted++; 
     $_SESSION['attempted'] = $attempted; 
    $resArray['status'] = true; 
    //$resArray['q_id'] = $no; 
    $resArray['message'] = 'Submitted Successfully'; 
    echo json_encode($resArray); 
    exit(); 
} 

===== questions.php ========

 <form action="includes/functions.php" id="question_form_<?php echo $j; ?>" > 
            <div class='container' > 
            <div class='row'> 
            <div class='col-lg-12'> 
     <div class='thumbnail'> 

    <p id="question_description">Q.<?php echo $i; ?><br><?php echo $row['QuestionDescription']; ?></p> 
     <div class="questions_options"> 
     <label><input type="radio" id="btn_radio" name="answer_<?php echo $j; ?>" value="<?php echo $row['Option1']; ?>"><?php echo $row['Option1']; ?></input></label><br> 


     <label><input type="radio" id="btn_radio" name="answer_<?php echo $j; ?>" value="<?php echo $row['Option2']; ?>"><?php echo $row['Option2']; ?></input></label><br> 

     <label><input type="radio" id="btn_radio" name="answer_<?php echo $j; ?>" value="<?php echo $row['Option3']; ?>"><?php echo $row['Option3']; ?></input></label><br> 

     <label><input type="radio" id="btn_radio" name="answer_<?php echo $j; ?>" value="<?php echo $row['Option4']; ?>"><?php echo $row['Option4']; ?></input></label><br><br> 
       <input type="hidden" name="question_id" value="<?php echo $row['QuestionId'] ?>"> 
       <input type="hidden" name="subject_id" value="<?php echo $row['SubjectId'] ?>"> 
       <input type="hidden" name="question_form" value="question_form"> 
       <input type="hidden" name="no" value="<?php echo $j; ?>"> 
       <button class="btn btn-primary btn-sm" id="btn_submit">Submit<i class="glyphicon glyphicon-arrow-right" > 

       </i></button>  
     </div> 



    </div> 
    </div> 

    </div> 

    </div> 

    </form> 

============ result.php ===== ==========

<table class="table table-striped table-hover" id="result_table" > 

    <thead> 
     <tr> 
     <th style="text-align: center;">Total Questions</th> 
     <th style="text-align: center;">Attempted Questions</th> 
     <th style="text-align: center;">Total Marks</th> 
     <th style="text-align: center;">Obtained Marks</th> 
     </tr> 
    </thead> 
    <tbody> 
    <tr> 
     <td style="text-align: center;"><?php echo $number_of_questions;?></td> 
     <td style="text-align: center;"><?php echo $_SESSION['attempted']; ?></td> 
     <td style="text-align: center;"><?php if(!isset($_SESSION['result'])) 
     { 
     echo "empty"; 
     } 
     else 
     { 
     echo $_SESSION['result']; 
     } 
     ?></td> 
     <td style="text-align: center;"><?php echo $marks_obtained;?></td> 
    </tr> 
    </tbody> 
    </table> 

Answer 1

のsession_start（）関数