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php+mysql开发一个最简单的在线题库,在线做题系统

时间:2021-07-01 10:21:17 帮助过:12人阅读

这篇文章主要介绍了php+mysql开发一个最简单的在线题库,在线做题系统,有着一定的参考价值,现在分享给大家,有需要的朋友可以参考一下

题库,对于教育机构,学校,在线教育,是很有必要的,网上也有不少的第三方在线题库系统,但是本次案例,会让有需要的人了解题库的开发思路,其实很简单,无非就是一个表单验证,数据库验证。

1、先构建表单数据

2、把表单数据通过get或者post方式提交到表单验证页面,和数据库进行匹配

3、返回结果,答案正确或者错误

构建表单:

index.php

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0" />
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <meta name="format-detection" content="telephone=no">
    <title>题库</title>
    <style type="text/css">
        *{list-style: none;margin:0px;padding: 0px;}
        #tiku{
            width: 300px;
            margin:10px auto;
        }

        #tiku ul li{
            float: left;
        }
    </style>
</head>
<body>
<?php
//获取数据库配置
require_once("config.php");
//连接数据库
$con = mysql_connect($host,$username,$password);
//设置数据库字符集  
mysql_query("SET NAMES UTF8");
//查询数据库
mysql_select_db($db, $con);
//查询数据库
//获取最新的1条数据
$all = mysql_num_rows(mysql_query("select * from $tb"));
//定义分页所需的参数
$lenght=1;                             //每页显示的数量
@$page=$_GET['page']?$_GET['page']:1;    //当前页
$offset=($page-1)*$lenght;              //每页起始行编号
$allpage=ceil($all/$lenght);            //所有的页数-总数页
$prepage=$page-1;                       //上一页       
if($page==1){
    $prepage=1;                         //特殊的是当前页是1时上一页就是1
    }
$nextpage=$page+1;
if($page==$allpage){
    $nextpage=$allpage;                //特殊的是最后页是总数页时下一页就是总数页
    }
$sql="select * from $tb order by id ASC limit {$offset},{$lenght}";
$rest=mysql_query($sql);
while($row = mysql_fetch_assoc($rest))
    {
        $id = $row["id"];
        $title = $row["title"];
        $A = $row["answer_A"];
        $B = $row["answer_B"];
        $C = $row["answer_C"];
        $D = $row["answer_D"];
        $true = $row["true"];
        $score = $row["score"];
    }
?>
<p id="tiku">
    <form action="check.php" method="get">
        <p><?php echo $title;?></p>
        <input type="radio" name="xuanxiang" value="<?php echo $A;?>">A:<?php echo $A;?><br>
        <input type="radio" name="xuanxiang" value="<?php echo $B;?>">B:<?php echo $B;?><br>
        <input type="radio" name="xuanxiang" value="<?php echo $C;?>">C:<?php echo $C;?><br>
        <input type="radio" name="xuanxiang" value="<?php echo $D;?>">D:<?php echo $D;?><br><br>
        <input type="hidden" name="id" value="<?php echo $id;?>">
        <button>提交</button>
    </form>
</p>
    <br/>
    <?php
    echo "<p id='tiku'>";
        echo "<ul>";
            echo "<li><a href='next.php?page=$prepage'>上一题</a></li>";
            echo "<li><a href='next.php?page=$nextpage'>下一题</a></li>";
        echo "</ul>";
    echo "<p>";
    echo "<br/>";
    echo "<p class='fenye_tips'>共".$allpage."道题,当前是第".$page."题</p>";
    echo "<br/><br/>";
    echo "</p>";
    ?>
</body>
</html>

表单接收

check.php

<?php
header("Content-type:text/html;charset=utf-8");
//获取数据库配置
require_once("config.php");
//连接数据库
$con = mysql_connect($host,$username,$password);
//设置数据库字符集  
mysql_query("SET NAMES UTF8");
//查询数据库
mysql_select_db($db, $con);
//获取数据
$xuanxiang = $_GET["xuanxiang"];
$id = $_GET["id"];
if (empty($xuanxiang)) {
    echo "<script>alert('请选择一个答案!');history.go(-1);</script>";
}else{
    //查询数据库
    $result = mysql_query("SELECT * FROM $tb WHERE id =".$id);
    while($row = mysql_fetch_array($result))
    {
        $true = $row["true"];
        $next_id = $id+1;
        if($xuanxiang == $true){
            echo "<script>alert('正确!得5分!');location.href='next.php?page=$next_id';</script>";
        }else{
            echo "<script>alert('错了!扣5分!');history.go(-1);</script>";
        }
    }
}
?>

数据库配置

config.php

<?php
//配置文件 - BY TANKING
$host="数据库地址";
$username="账号";
$password="密码";
$db="数据库名";
$tb = "表名";
?>

next.php

下一题

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0" />
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <meta name="format-detection" content="telephone=no">
    <title>题库</title>
    <style type="text/css">
        *{list-style: none;margin:0px;padding: 0px;}
        #tiku{
            width: 300px;
            margin:10px auto;
        }

        #tiku ul li{
            float: left;
        }
    </style>
</head>
<body>
<?php
//获取数据库配置
require_once("config.php");
//连接数据库
$con = mysql_connect($host,$username,$password);
//设置数据库字符集  
mysql_query("SET NAMES UTF8");
//查询数据库
mysql_select_db($db, $con);
//查询数据库
//获取最新的1条数据
$all = mysql_num_rows(mysql_query("select * from $tb"));
//定义分页所需的参数
$lenght=1;                             //每页显示的数量
@$page=$_GET['page']?$_GET['page']:1;    //当前页
$offset=($page-1)*$lenght;              //每页起始行编号
$allpage=ceil($all/$lenght);            //所有的页数-总数页
$prepage=$page-1;                       //上一页       
if($page==1){
    $prepage=1;                         //特殊的是当前页是1时上一页就是1
    }
$nextpage=$page+1;
if($page==$allpage){
    $nextpage=$allpage;                //特殊的是最后页是总数页时下一页就是总数页
    }
$sql="select * from $tb order by id ASC limit {$offset},{$lenght}";
$rest=mysql_query($sql);
while($row = mysql_fetch_assoc($rest))
    {
        $id = $row["id"];
        $title = $row["title"];
        $A = $row["answer_A"];
        $B = $row["answer_B"];
        $C = $row["answer_C"];
        $D = $row["answer_D"];
        $true = $row["true"];
        $score = $row["score"];
    }
?>
<p id="tiku">
    <form action="check.php" method="get">
        <p><?php echo $title;?></p>
        <input type="radio" name="xuanxiang" value="<?php echo $A;?>">A:<?php echo $A;?><br>
        <input type="radio" name="xuanxiang" value="<?php echo $B;?>">B:<?php echo $B;?><br>
        <input type="radio" name="xuanxiang" value="<?php echo $C;?>">C:<?php echo $C;?><br>
        <input type="radio" name="xuanxiang" value="<?php echo $D;?>">D:<?php echo $D;?><br><br>
        <input type="hidden" name="id" value="<?php echo $id;?>">
        <button>提交</button>
    </form>
</p>
    <br/>
    <?php
    echo "<p id='tiku'>";
        echo "<ul>";
            echo "<li><a href='next.php?page=$prepage'>上一题</a></li>";
            echo "<li><a href='next.php?page=$nextpage'>下一题</a></li>";
        echo "</ul>";
    echo "<p>";
    echo "<br/>";
    echo "<p class='fenye_tips'>共".$allpage."道题,当前是第".$page."题</p>";
    echo "<br/><br/>";
    echo "</p>";
    ?>
</body>
</html>

数据库结构

title --------题目
answer_A -----答案A
answer_B -----答案B
answer_C -----答案C
answer_D -----答案D
true ---------正确答案
score --------得分


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