单选题收集每一题的随机题号，name为啥要用‘a‘表示
<form action="getAnswer.php" method="post">
<?php
include_once('conn.php');
$sum=1;
$result=mysqli_query($conn,"select*from exercise order by rand() limit 10");
$names=1;
$x='a';
while($row=mysqli_fetch_assoc($result)){
?>
<ul>
<li><?echo $names;?><? echo ".";?><?=$row['text']?></li><br />
<li><input name="<?=$names?>" type="radio" value="A"><?=$row['textA']?></li>
<li><input name="<?=$names?>" type="radio" value="B"><?=$row['textB']?></li>
<li><input name="<?=$names?>" type="radio" value="C"><?=$row['textC']?></li>
<li><input name="<?=$names?>" type="radio" value="D"><?=$row['textD']?></li>
<input name="<?=$x?>" type="hidden" value="<?=$row['id']?>">//收集题号
</ul> <hr />
<?
$names++;$x++;
}
?>
<center><input class="btn" name=submit type="submit" value="提交" style="cursor:pointer;" onclick="sub()"></center>
</form>
因为你后台是通过$_POST['name']获取的
html代码
<form action="welcome.php" method="post">
名字: <input type="text" name="fname">
年龄: <input type="text" name="age">
<input type="submit" value="提交">
</form>welcome.php
欢迎 <?php echo $_POST["fname"]; ?>!<br>
你的年龄是 <?php echo $_POST["age"]; ?> 岁。