将单选按钮数组发布到 php 数组变量

Question

问题是我无法将输入从 HTML 数组发布到 php 数组变量。

X 单选按钮组说 answer[1] ,answer[2] .... answer[x]。 answer[1] 有四个值 A,B,C,D 选择的单选按钮值存储在 answer[1] 中，对于所有 answer[2], .... answer[x] 都相同。所以基本上我想将每个选定的选项存储在数组中，即数组位置 1 的 1 的正确答案等等...... 我正在尝试获取客观问题的答案并将其保存到提交时的数组变量中，然后在单列中插入数据库中。

当用户输入问题数（例如 10）时，他会为每个问题获得 A、B、C、D 单选按钮，即 A、B、C、D 的 10 次，并且可以选择正确答案并提交。 然后将所有答案保存在数组中并插入表中。

Html 输出显示为...

<tr>
  <td>1&nbsp &nbsp &nbsp <input type="radio" name="answer[1]" value="A"> &nbsp A &nbsp <input type="radio" name="answer[1]" value="B"> &nbsp B &nbsp<input type="radio" name="answer[1]" value="C"> &nbsp C &nbsp <input type="radio" name="answer[1]" value="D">&nbsp D 
  </td>
</tr>
<tr>
   <td>2&nbsp &nbsp &nbsp <input type="radio" name="answer[2]" value="A"> &nbsp A &nbsp <input type="radio" name="answer[2]" value="B"> &nbsp B &nbsp<input type="radio" name="answer[2]" value="C"> &nbsp C &nbsp <input type="radio" name="answer[2]" value="D">&nbsp D
    </td>
 </tr>
 <tr>
    <td>3&nbsp &nbsp &nbsp <input type="radio" name="answer[3]" value="A"> &nbsp A &nbsp <input type="radio" name="answer[3]" value="B"> &nbsp B &nbsp<input type="radio" name="answer[3]" value="C"> &nbsp C &nbsp <input type="radio" name="answer[3]" value="D">&nbsp D
    </td>
  </tr>
<tr>
   <td>4&nbsp &nbsp &nbsp <input type="radio" name="answer[4]" value="A"> &nbsp A &nbsp <input type="radio" name="answer[4]" value="B"> &nbsp B &nbsp<input type="radio" name="answer[4]" value="C"> &nbsp C &nbsp <input type="radio" name="answer[4]" value="D">&nbsp D
   </td>
 </tr>
 <tr>
   <td>5&nbsp &nbsp &nbsp <input type="radio" name="answer[5]" value="A"> &nbsp A &nbsp <input type="radio" name="answer[5]" value="B"> &nbsp B &nbsp<input type="radio" name="answer[5]" value="C"> &nbsp C &nbsp <input type="radio" name="answer[5]" value="D">&nbsp D
   </td>
       </tr> 

echo 上的 PHP 变量显示 Null.. $tq 是问题的总数...

if(isset($_REQUEST['Submit']))
{ $x=1;
while($tq>=$x) { 
echo "hiii";
$answer_id[] = $_POST['answer[]'] ;$x++;
var_dump( $answer_id[$x]);
}} 
<form action="" method="post" enctype="multipart/form-data" name="form1" onsubmit="javascript:return valpass(this);">
<table width="100%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr >
<td class="page-top-outer"  ><?php include("header_content.php"); ?></td>
</tr>  
<tr>
<td height="500" class="top-inp"><?php include("menu.php"); ?></td>
</tr>
<?php $x=0;
while($tq>0) { $tq--; $x++; 
echo '<tr><td>'.$x.'&nbsp&nbsp&nbsp<input type="radio" name="answer['.$x.']" value="A">&nbsp A &nbsp<input type="radio" name="answer['.$x.']" value="B">&nbsp B &nbsp<input type="radio" name="answer['.$x.']" value="C">&nbsp C&nbsp<input type="radio" name="answer['.$x.']" value="D">&nbsp D</td></tr>';

}
?>
<input name="Submit" type="Submit" value="Submit">
</table>

如果 $tq=5，则输出为 5 倍。

Answer 1

你能不能像这样更新代码并尝试：

HTML

<tr>
  <td>1&nbsp &nbsp &nbsp <input type="radio" name="answer1[]" value="A"> &nbsp A &nbsp
      <input type="radio" name="answer1[]" value="B"> &nbsp B &nbsp
      <input type="radio" name="answer1[]" value="C"> &nbsp C &nbsp 
      <input type="radio" name="answer1[]" value="D">&nbsp D 
  </td>
</tr>
<tr>
   <td>2&nbsp &nbsp &nbsp <input type="radio" name="answer2[]" value="A"> &nbsp A &nbsp 
       <input type="radio" name="answer2[]" value="B"> &nbsp B &nbsp
       <input type="radio" name="answer2[]" value="C"> &nbsp C &nbsp 
       <input type="radio" name="answer2[]" value="D">&nbsp D
    </td>
 </tr>
 <tr>
    <td>3&nbsp &nbsp &nbsp <input type="radio" name="answer3[]" value="A"> &nbsp A &nbsp 
        <input type="radio" name="answer3[]" value="B"> &nbsp B &nbsp
        <input type="radio" name="answer3[]" value="C"> &nbsp C &nbsp 
        <input type="radio" name="answer3[]" value="D">&nbsp D
    </td>
  </tr>
<tr>
   <td>4&nbsp &nbsp &nbsp <input type="radio" name="answer4[]" value="A"> &nbsp A &nbsp 
       <input type="radio" name="answer4[]" value="B"> &nbsp B &nbsp
       <input type="radio" name="answer4[]" value="C"> &nbsp C &nbsp 
       <input type="radio" name="answer4[]" value="D">&nbsp D
   </td>
 </tr>
 <tr>
   <td>5&nbsp &nbsp &nbsp <input type="radio" name="answer5[]" value="A"> &nbsp A &nbsp 
       <input type="radio" name="answer5[]" value="B"> &nbsp B &nbsp
       <input type="radio" name="answer5[]" value="C"> &nbsp C &nbsp 
       <input type="radio" name="answer5[]" value="D">&nbsp D
   </td>
       </tr>

PHP

$answer1 = $_POST['answer1'];
$answer2 = $_POST['answer2'];
$answer3 = $_POST['answer3'];
$answer4 = $_POST['answer4'];
$answer5 = $_POST['answer5'];

Answer 2

$_POST 会像 -

array(
    answer => array(
               1 => value1,
               2 => value2,
               .......
              )
)

试试 -

$answers = $_POST['answer'];
foreach ($answers as $answer) {
    var_dump($answer);
}