<?php
header("Content-type: text/html; charset=utf-8");
$p13=$str[‘UserId‘]; //获取当前访问者唯一id:P13
$sql_num="select count(*)as num from yb_grade where p13=‘".$p13."‘";
$rows_num=$db->db_query($sql_num);
if($rows_num[0]["NUM"]==0){
$sql_exam="select * from yb_exam order by examid";
$rows_exam=$db->db_query($sql_exam);
$str="";
if(!empty($rows_exam))
{
foreach($rows_exam as $k=> $v)
{
$examid = $v[‘EXAMID‘];
$examname = $v[‘EXAMNAME‘];
$examname = iconv(‘GBK‘,‘UTF-8‘,$examname);
$optiona = $v[‘OPTIONA‘];
$optiona = iconv(‘GBK‘,‘UTF-8‘,$optiona);
$optionb = $v[‘OPTIONB‘];
$optionb = iconv(‘GBK‘,‘UTF-8‘,$optionb);
$optionc = $v[‘OPTIONC‘];
$optionc = iconv(‘GBK‘,‘UTF-8‘,$optionc);
$optiond = $v[‘OPTIOND‘];
$optiond = iconv(‘GBK‘,‘UTF-8‘,$optiond);
$answer = $v[‘ANSWER‘];
$str.="<div>
<div>
".$examid."、".$examname."
</div>
<div>
<input type=‘radio‘name=‘radio".$examid."‘ id=‘radio".$examid."A‘ value=‘A‘><label for=‘radio".$examid."A‘>A ".$optiona."</label><br>
<input type=‘radio‘name=‘radio".$examid."‘ id=‘radio".$examid."B‘ value=‘B‘><label for=‘radio".$examid."B‘>B ".$optionb."</label><br>";
if(!empty($optionc)){
$str.=" <input type=‘radio‘name=‘radio".$examid."‘ id=‘radio".$examid."C‘ value=‘C‘><label for=‘radio".$examid."C‘>C ".$optionc."</label><br>";
}
if(!empty($optiond)){
$str.=" <input type=‘radio‘name=‘radio".$examid."‘ id=‘radio".$examid."D‘ value=‘D‘><label for=‘radio".$examid."D‘>D ".$optiond."</label><br>";
}
$str.="</div>
<div style=‘background:#f8f6f3;display:none‘ class=‘message‘ >
<div style=‘color:red‘ class=‘result‘>正确答案为：<span class=‘answer‘>".$answer."</span> </div>
</div>
</div>";
}
}
}else{
echo "<script>alert(‘请勿重复参加‘);window.history.back(-1);</script>";
die;
}
?>
<html>
<head>
<title></title>
<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="Cache-Control" content="no-cache">
<meta http-equiv="Expires" content="0">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="initial-scale=1, maximum-scale=1">
<link rel="shortcut icon" href="/favicon.ico">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link href="../function/layer_mobile/need/layer.css" rel="stylesheet" type="text/css">
<script src="../function/js/jquery.js"></script>
<script src="../function/layer_mobile/layer.js"></script>
<script type="text/javascript">
var p13="<?php echo $p13;?>";
function tijiao(){
$("#tijiao").css("display","none");
$(".message").css("display","");
var grade=0;
var checkInputs = $("input:checked") // 获取选中的input
var answer=$(".answer").text();
var result=$(".result");
for(var i = 0;i<checkInputs.length;i++){
var v = checkInputs[i].value; // 计算
$(checkInputs[i]).next().css("color","#47cccc")
if(v==answer[i]){
$(result[i]).append("<img src=‘./img/right.png‘>");
grade=grade+5;
}else{
$(result[i]).append("<img src=‘./img/error.png‘>");
}
}
$.ajax({
type: "POST",
async:true,
url: "./save.php",
cache:false,
data:"grade="+grade+"&p13="+p13,
dataType:"text",
success:function(msg)//ajax成功
{
if(msg!="101"){
console.log(msg);
var array=msg.split(",");
$("#grade").text(array[0]+"分");
$("#pm").text(array[1]+"名");
$("#num").text(array[2]+"人");
$("#information").css("display","");
$("input[type=‘radio‘]").attr("disabled",true);
//回到顶端
scroll(0,0);
}else{
alert("不好意思，出错啦");
}
}
})
}
</script>
</head>
<body >
<div style="height:50px;width:100%;text-align:center;font-size:25px;font-weight:bolder">考试试卷</div>
<div id="information" style="height:350px;width:323px;background:transparent url(./img/grad.png) no-repeat scroll 0 0;margin:0 auto;text-align:center;font-size:20px;line-height:50px;display:none;">
<div style="height:50px;"></div>
<div>
<span>成绩：</span><span id="grade" style="color:red;font-size:25px;"></span>
</div>
<div>
<span>排名：</span><span id="pm"></span>
</div>
<div>
<span>满分：</span><span >100分</span>
</div>
<div >
<span>人数：</span><span id="num"></span>
</div>
</div>
<div style="margin-top:20px;line-height:40px;padding:5px;width:100%">
<form >
<?php echo $str; ?>
<div id="tijiao" style="text-align:center;margin-top:10px;" onclick=tijiao()><input type="button" value="提交" style="font-size:18px;background:#a0e1ff;color:white;width:80%;height:50px;"></div>
</form>
</div>
</body>
</html>
原文：https://www.cnblogs.com/steven-snow/p/12968787.html