單選按鈕組與別人分開使用php while循環dosn't工作

Question

iam與問題頁面工作，每個用戶將向他展示2個或更多的問題每個問題有4個答案和4個（單選按鈕），每個問題必須從其他問題，這基本上意味着曾經單選按鈕組必須是像這樣，我的問題是像圖像波紋管（我不能發佈他們全部）

我有使用此代碼（不工作）

$sql2 = "SELECT * FROM questions WHERE subject = 'web lang' LIMIT 5 "; 
$result2 = mysqli_query($conn,$sql2); 

       echo "<form action='' method='POST'>"; 

        while ($row2 = mysqli_fetch_array($result2,MYSQLI_ASSOC)) { 

        echo "<div align='center'> 
        <table> 

         <thead> 
         <tr > 
         <th >Q & A</th> 
         <th>Choose</th> 
         </tr> 
         </thead> 
         <tbody> 
         <tr> 
         <td>".$row2['question']."</td> 
         <td></td> 
         </tr> 
         <tr> 
         <td>".$row2['ans1']."</td> 
         <td><input type='radio' name='chk' value='1' > 
         </tr> 
         <tr> 
         <td>".$row2['ans2']."</td> 
         <td><input type='radio' name='chk' value='2' > 
         </tr> 
         <tr> 
         <td>".$row2['ans3']."</td> 
         <td><input type='radio' name='chk' value='3' > 
         </tr> 
         <tr> 
         <td>".$row2['ans4']."</td> 
         <td><input type='radio' name='chk' value='4' > 
         </tr> 
         </tbody> 
        </table><br> <br> 
        </div> 
        "; 

        } 
        echo "<input type='submit' name='submit'> 
        </form>"; 
        if (isset($_POST['submit'])) { 

         $chk = $_POST['chk']; 

         Echo $chk; 

        } 

即使我贊同這樣的

print_r(array_values($chk)); 

，如果我每次都使用我不能得到名稱不同的名稱，我用這個代碼，同時循環中，其確定的作品，但如何讓其他表的價值？

$new = 0; 
<input type='radio' name='chk".$new."' value='some value' > 
$new++; 

Answer 1

試試這個：

$sql2 = "SELECT * FROM questions WHERE subject = 'web lang' LIMIT 5 "; 
$result2 = mysqli_query($conn,$sql2); 

       echo "<form action='' method='POST'>"; 
       $i=0; 
        while ($row2 = mysqli_fetch_array($result2,MYSQLI_ASSOC)) { 

        echo "<div align='center'> 
        <table> 

         <thead> 
         <tr > 
         <th >Q & A</th> 
         <th>Choose</th> 
         </tr> 
         </thead> 
         <tbody> 
         <tr> 
         <td>".$row2['question']."</td> 
         <td></td> 
         </tr> 
         <tr> 
         <td>".$row2['ans1']."</td> 
         <td><input type='radio' name='chk".$i."' value='1' > 
         </tr> 
         <tr> 
         <td>".$row2['ans2']."</td> 
         <td><input type='radio' name='chk".$i."' value='2' > 
         </tr> 
         <tr> 
         <td>".$row2['ans3']."</td> 
         <td><input type='radio' name='chk".$i."' value='3' > 
         </tr> 
         <tr> 
         <td>".$row2['ans4']."</td> 
         <td><input type='radio' name='chk".$i."' value='4' > 
         </tr> 
         </tbody> 
        </table><br> <br> 
        </div> 
        "; 
        $i++; 
        } 
        echo "<input type='submit' name='submit'> 
        </form>"; 
        if (isset($_POST['submit'])) { 

         $chk = $_POST['chk']; 

         Echo $chk; 

        } 

Answer 2

假設的事實，你必須與每一個問題相關的questionID列，改變你的while循環通過以下方式，

// your code 
echo "<form action='' method='POST'>"; 
while ($row2 = mysqli_fetch_array($result2,MYSQLI_ASSOC)) { 
    ?> 
    <div align='center'> 
    <table> 
     <thead> 
      <tr > 
       <th >Q & A</th> 
       <th>Choose</th> 
      </tr> 
     </thead> 
     <tbody> 
      <tr> 
       <td><?php echo $row2['question']; ?></td> 
       <td></td> 
      </tr> 
      <tr> 
       <td><?php echo $row2['ans1']; ?></td> 
       <td><input type='radio' name='chk[<?php echo $row2['quesrtionID']; ?>]' value='1' > 
      </tr> 
      <tr> 
       <td><?php echo $row2['ans2']; ?></td> 
       <td><input type='radio' name='chk[<?php echo $row2['quesrtionID']; ?>]' value='2' > 
      </tr> 
      <tr> 
       <td><?php echo $row2['ans3']; ?></td> 
       <td><input type='radio' name='chk[<?php echo $row2['quesrtionID']; ?>]' value='3' > 
      </tr> 
      <tr> 
       <td><?php echo $row2['ans4']; ?></td> 
       <td><input type='radio' name='chk[<?php echo $row2['quesrtionID']; ?>]' value='4' > 
      </tr> 
     </tbody> 
    </table> 
    <br> <br> 
    </div> 
    <?php 
} 
echo "<input type='submit' name='submit'> 
</form>"; 
// your code 

後來當用戶選擇無線電選項並點擊提交按鈕時，獲取問題ID和fo中的相應（給定）答案一路走來，

if (isset($_POST['submit'])) { 
    foreach($_POST['chk'] as $questionID => $answer){ 
     // $questionID is the question ID and $answer is 
     // the corresponding given answer of that quesrtion 
    } 
}