我正在创建一个测验：
<?php
session_start();
include './connect.php';
if($_POST['chkAns']=="CHECK ANSWERS")
{
$answer = mysql_query("SELECT num,answer FROM data");
$count = mysql_num_rows($answer);
while($ans = mysql_fetch_array($answer))
{
$stdAns = mysql_query("SELECT a".$ans["num"]." FROM account WHERE member='1'");
$stdAnswer = mysql_result($stdAns,0,"a".$ans["num"]);
if($ans["answer"]==$stdAnswer)
{
$score+=1;
}
}
echo '<script>alert("Your Score is: "+'.$score.');</script>';
}
?>
<html>
<head>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="jquery-ui.min.js"></script>
<script>
$(window).load(function(){
$("input[type='radio']").click(function(){
var qstn = $(this).attr('qnum');
var ans = $(this).attr('value');
$.ajax({
type: "POST",
url: "./ans.php",
data: "stdID=2&q="+qstn+"&ans="+ans
});
alert("Question Number: " + qstn +"\nAnswer: "+ ans);
});
});
</script>
<script language="javascript" type="text/javascript">
$(document).ready(function() {
$("#online").load("./tmr.php");
var refreshId = setInterval(function() {
$("#online").load('./tmr.php');
$.ajax({
type: "POST",
url: "./update.php",
data: "stdID=1"
});
}, 1000);
$.ajaxSetup({ cache: false });
});
</script>
</head>
<body>
<div id="online"></div>
<?php
$result = mysql_query("SELECT * FROM data ");
$count = mysql_num_rows($result);
while($rows = mysql_fetch_array($result))
{
?>
<p><?php echo $rows["question"]; ?></p>
<?php
$getAns = mysql_query("SELECT a".$rows['num']." FROM account WHERE member='2'");
$answ= mysql_result($getAns,0,"a".$rows['num']);
echo $rows['num'];
if($answ=='A')
{
?>
<input checked type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="A" onClick="saveans(this);"/><?php echo"A. ".$rows['choice1']; ?><br/>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="B" onClick="saveans(this);"/> <?php echo"B. " .$rows['choice2']; ?><br/>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="C" onClick="saveans(this);"/> <?php echo"C. ".$rows['choice3']; ?><br/>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="D" onClick="saveans(this);"/> <?php echo"D. " .$rows['choice4']; ?><br/>
<?php } elseif($answ=='B') { ?>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="A" onClick="saveans(this);"/> <?php echo"A. " .$rows['choice1']; ?><br/>
<input checked type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="B" onClick="saveans(this);"/> <?php echo"B. " .$rows['choice2']; ?><br/>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="C" onClick="saveans(this);"/> <?php echo"C. " .$rows['choice3']; ?><br/>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="D" onClick="saveans(this);"/> <?php echo"D. " .$rows['choice4']; ?><br/>
<?php } elseif($answ=='C') { ?>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="A" onClick="saveans(this);"/> <?php echo"A. " .$rows['choice1']; ?><br/>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="B" onClick="saveans(this);"/> <?php echo"B. " .$rows['choice2']; ?><br/>
<input checked type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="C" onClick="saveans(this);"/> <?php echo"C. " .$rows['choice3']; ?><br/>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="D" onClick="saveans(this);"/> <?php echo"D. " .$rows['choice4']; ?><br/>
<?php } elseif($answ=='D') { ?>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="A" onClick="saveans(this);"/> <?php echo"A. " . $rows['choice1']; ?><br/>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="B" onClick="saveans(this);"/> <?php echo"B. " . $rows['choice2']; ?><br/>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="C" onClick="saveans(this);"/> <?php echo"C. " . $rows['choice3']; ?><br/>
<input checked type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="D" onClick="saveans(this);"/> <?php echo"D. " . $rows['choice4']; ?><br/>
<?php } else { ?>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="A" onClick="saveans(this);"/> <?php echo"A. " . $rows['choice1']; ?><br/>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="B" onClick="saveans(this);"/> <?php echo"B. " . $rows['choice2']; ?><br/>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="C" onClick="saveans(this);"/> <?php echo"C. " . $rows['choice3']; ?><br/>
<input type="radio" qnum="<?php echo $rows['num']; ?>" name="a<?php echo $rows['num']; ?>" value="D" onClick="saveans(this);"/> <?php echo"D. " . $rows['choice4']; ?><br/>
<?php }
} ?>
<form method="POST">
<input type="submit" value="CHECK ANSWERS" alt="chkAns" name="chkAns"/>
</form>
</body>
</html>
问题是当我的字段为empty(a".$ans["num"])时，它只显示字母A而选项B，C和D为空白。但是如果该字段不为空，它将显示所有单选按钮并检查字段中保存的值。
我刚刚编辑过它。这是由错误的拼写引起的 - 而不是choice2它是choi2ce。