Question

我正在制作一个多项选择题，在第一页上，radiobuttons看起来像这样

$resultx = $connx->query($sqlx);
$qcounter = 1;
echo '<form action="result.php" method="post">';
echo "<table>";
while ($row = mysqli_fetch_array($resultx)) {
    echo '<tr><td>Question '.$qcounter.'<br/></td></tr>';
    //output a row here
    echo "<tr><td>".($row['Question'])."</td></tr>";
    echo '<tr><td><input type="radio" name="q' . $qcounter . '[]" value="A" id="question-1-answers-A"/><label for="question-1-answers-C3">A)&nbsp;'.($row['AnswerA']).'</label></td></tr>';
    echo '<tr><td><input type="radio" name="q' . $qcounter . '[]" value="B" id="question-1-answers-B"/><label for="question-1-answers-C3">B)&nbsp;'.($row['AnswerB']).'</label></td></tr>';
    echo '<tr><td><input type="radio" name="q' . $qcounter . '[]" value="C" id="question-1-answers-C"/><label for="question-1-answers-C3">C)&nbsp;'.($row['AnswerC']).'</label></td></tr>';
    echo '<tr><td><input type="radio" name="q' . $qcounter . '[]" value="D" id="question-1-answers-D"/><label for="question-1-answers-C3">D)&nbsp;'.($row['AnswerD']).'</label></td></tr>';
    echo '<tr><td><input type="radio" name="q' . $qcounter . '[]" value="E" id="question-1-answers-E"/><label for="question-1-answers-C3">E)&nbsp;'.($row['AnswerE']).'</label></td></tr>';
    echo '<tr><td><input type="hidden" name="question-id[]" value='.($row['id']).'</td></tr>';
    echo '<tr><td><input type="hidden" name="question_bar_code[]" id="question_bar_code" value='.($row['CorrectAnswer']).'</td></tr>';
    echo '<tr><td><br/></td></tr>';
    $qcounter++;
    }
echo "</table>";
echo '<div>';
echo '<input class="hvr-fade1" type="submit" value="Finish">';
echo '</div>';
echo '</form>';

我有一个计数器（qcounter）来命名radiobuttons，并且每个问题的radiobuttons的名称是q1，q2，q3，q4，因为它们是循环的，具体取决于问题的数量。

现在是我的第二页，我分析结果我有这个代码来检索并查看所选的radiobuttons：

<?php
$qcounter = 1;
$answer1 = $_POST["q".$qcounter];
foreach($answer1 as $item1) {
    echo "<table>";
    echo "<tr><td>".$item1."</td></tr>";
    $qcounter2++;
echo "</table>";  
}
?>

但它只回显了选定的q1

单选按钮

我能以任何方式让他们全部回应吗？

Answer 1

您可以在loop之外设置计数器并在循环内使用它：

$qcounter = 1;
while ($row = mysqli_fetch_array($resultx)) {
    echo '<tr><td>Question '.$qcounter.'<br/></td></tr>';
    echo "<tr><td>".($row['Question'])."</td></tr>";
    echo '<tr><td><input type="radio" name="q' . $qcounter . '[]" value="A" id="question-1-answers-A"/><label for="question-1-answers-C3">A)&nbsp;'.($row['AnswerA']).'</label></td></tr>';
    echo '<tr><td><input type="radio" name="q' . $qcounter . '[]" value="B" id="question-1-answers-B"/><label for="question-1-answers-C3">B)&nbsp;'.($row['AnswerB']).'</label></td></tr>';
    echo '<tr><td><input type="radio" name="q' . $qcounter . '[]" value="C" id="question-1-answers-C"/><label for="question-1-answers-C3">C)&nbsp;'.($row['AnswerC']).'</label></td></tr>';
    echo '<tr><td><input type="radio" name="q' . $qcounter . '[]" value="D" id="question-1-answers-D"/><label for="question-1-answers-C3">D)&nbsp;'.($row['AnswerD']).'</label></td></tr>';
    $qcounter++;
}

更新

更改问题后，这是一个更好的答案：

您应该将所有input更改为多维数组：

$resultx = $connx->query($sqlx);
$qcounter = 1;
echo '<form action="result.php" method="post">';
echo "<table>";
while ($row = mysqli_fetch_array($resultx)) {
    echo '<tr><td>Question '.$qcounter.'<br/></td></tr>';
    //output a row here
    echo "<tr><td>".($row['Question'])."</td></tr>";
    echo '<tr><td><input type="radio" name="q[' . $qcounter . '][]" value="A" id="question-1-answers-A"/><label for="question-1-answers-C3">A)&nbsp;'.($row['AnswerA']).'</label></td></tr>';
    echo '<tr><td><input type="radio" name="q[' . $qcounter . '][]" value="B" id="question-1-answers-B"/><label for="question-1-answers-C3">B)&nbsp;'.($row['AnswerB']).'</label></td></tr>';
    echo '<tr><td><input type="radio" name="q[' . $qcounter . '][]" value="C" id="question-1-answers-C"/><label for="question-1-answers-C3">C)&nbsp;'.($row['AnswerC']).'</label></td></tr>';
    echo '<tr><td><input type="radio" name="q[' . $qcounter . '][]" value="D" id="question-1-answers-D"/><label for="question-1-answers-C3">D)&nbsp;'.($row['AnswerD']).'</label></td></tr>';
    echo '<tr><td><input type="radio" name="q[' . $qcounter . '][]" value="E" id="question-1-answers-E"/><label for="question-1-answers-C3">E)&nbsp;'.($row['AnswerE']).'</label></td></tr>';
    echo '<tr><td><input type="hidden" name="question-id[]" value='.($row['id']).'</td></tr>';
    echo '<tr><td><input type="hidden" name="question_bar_code[]" id="question_bar_code" value='.($row['CorrectAnswer']).'</td></tr>';
    echo '<tr><td><br/></td></tr>';
    $qcounter++;
    }
echo "</table>";
echo '<div>';
echo '<input class="hvr-fade1" type="submit" value="Finish">';
echo '</div>';
echo '</form>';

现在 - 在用户post编辑表单后 - 您应该遍历$_POST['q']数组以获取相关值：

foreach ($_POST['q'] as $qid => $answer1) {
    foreach($answer1 as $item1) {
        echo "<table>";
        echo "<tr><td>".$item1."</td></tr>";
        $qcounter2++;
        echo "</table>"; 
    }
}

您最好使用var_dump($_POST['q']);甚至var_dump($_POST['q'][1]);来更好地了解在提交表单后从浏览器收到的数据。

使用计数器循环$ POST变量

1 个答案:

更新