本文实例讲述了php+mysql开发的最简单在线题库。分享给大家供大家参考,具体如下:

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"];
  }
?>
<div 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 $id;?>">
    <button>提交</button>
  </form>
</div>
  <br/>
  <?php
  echo "<div id='tiku'>";
    echo "<ul>";
      echo "<li><a href='next.php?page=$prepage'>上一题</a></li>";
      echo "<li><a href='next.php?page=$nextpage'>下一题</a></li>";
    echo "</ul>";
  echo "<div>";
  echo "<br/>";
  echo "<p class='fenye_tips'>共".$allpage."道题,当前是第".$page."题</p>";
  echo "<br/><br/>";
  echo "</div>";
  ?>
</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"];
  }
?>
<div 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 $id;?>">
    <button>提交</button>
  </form>
</div>
  <br/>
  <?php
  echo "<div id='tiku'>";
    echo "<ul>";
      echo "<li><a href='next.php?page=$prepage'>上一题</a></li>";
      echo "<li><a href='next.php?page=$nextpage'>下一题</a></li>";
    echo "</ul>";
  echo "<div>";
  echo "<br/>";
  echo "<p class='fenye_tips'>共".$allpage."道题,当前是第".$page."题</p>";
  echo "<br/><br/>";
  echo "</div>";
  ?>
</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

更多关于php相关内容感兴趣的读者可查看本站专题:《php+mysql数据库操作入门教程》、《php+mysqli数据库程序设计技巧总结》、《php面向对象程序设计入门教程》、《php数组(array)操作技巧大全》、《php字符串(string)用法总结》及《php常见数据库操作技巧汇总》

希望本文所述对大家php程序设计有所帮助。