PHP----练习-----新闻管理----增删改查

练习-----新闻管理

题目要求如下：

做法：

【1】建数据库

【2】封装类文件--------DBDA.class.php

 1 <?php
 2 class DBDA
 3 {
 4     public $fuwuqi="localhost";  //服务器地址
 5     public $yonghuming="root";//用户名
 6     public $mima="";//密码    
 7     
 8     public $dbconnect;//连接对象
 9     
10     //操作数据库的方法
11     
12     //$sql代表需要执行的SQL语句
13     //$type代表SQL语句的类型，1代表查询，2代表增删改
14     //$shujukuming代表数据库的名称
15     //如果是查询，返回二维数组
16     //如果是增删改，返回true或false
17     
18     function Query($sql,$type=1,$shujukuming="newssystem")
19     {
20         //造连接对象
21         $this->dbconnect = new MySQLi($this->fuwuqi,$this->yonghuming,$this->mima,$shujukuming);
22         
23         //判断是否出错
24         if(!mysqli_connect_error())
25         {
26             //如果连接成功,执行SQL语句
27             $result = $this->dbconnect->query($sql);
28             
29             //根据语句类型判断
30             if($type==1)
31             {
32                //如果是查询语句,返回二维数组
33                return $result->fetch_all();    
34             }
35             else
36             {
37                 //如果是其他语句，返回true或false
38                return $result;    
39             }
40         
41         }
42         else
43         {
44             return"连接失败";
45             
46         }
47         
48         
49     }
50     
51 }
52 
53 
54 
55 
56 ?>

【3】发布新闻页面---------fabuxinwen.php

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 2 <html xmlns="http://www.w3.org/1999/xhtml">
 3 <head>
 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 5 <title>无标题文档</title>
 6 </head>
 7 <body>
 8 <center><h1>发布新闻</h1> 
 9 
10 <form action="fabuxinwenchuli.php" method="post">
11 
12 <div>标题：<input type="text" name="title" style="width:400px"/></div><br />
13 
14 <div>作者：<input type="text" name="Author" style="width:200px"/></div><br />
15 
16 <div>来源：<input type="text" name="source" style="width:400px"/></div><br />
17 
18 <div>内容：<textarea name="content" cols="50" rows="4" ></textarea></div><br />
19 <br />
20 
21 <div><input type="submit" name="tijiao" value="提交"  />&nbsp;
22 <a href="chakan.php"><input type="button" value="查看"/></a></div>
23 </form>
24 
25 </center>
26 </body>
27 </html>

【4】发布新闻的处理页面：----------fabuxinwenchuli.php

 1 <?php
 2  
 3 $title = $_POST["title"];
 4 $Author = $_POST["Author"];
 5 $source = $_POST["source"];
 6 $content  = $_POST["content"]; 
 7 $shijian= date("Y-m-d H:i:s");
 8 
 9 include("DBDA.class.php");
10 
11 $dx=new DBDA();
12 
13 $sql="insert into news values('','{$title}','{$Author}','{$source}','{$content}','{$shijian}')";
14 
15 
16 $r = $dx->Query($sql,0);
17 
18 if($r)
19 {
20     header("location:fabuxinwen.php");
21 }
22 else
23 {
24     echo "修改失败！";
25 }
26 
27 
28 
29 
30 ?>

【4】查看新闻页面----------chakan.php

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 2 <html xmlns="http://www.w3.org/1999/xhtml">
 3 <head>
 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 5 <title>查看新闻</title>
 6 <!--点击”查看“按钮，显示‘查看新闻’页面-->
 7 </head>
 8 <body>
 9 <table width="1000px" cellpadding="1" border="1"ellspacing="1">
10 <tr>
11 <td>编号</td>
12 <td>标题</td>
13 <td>作者</td>
14 <td>来源</td>
15 <td>内容</td>
16 <td>时间</td>
17 <td>修改</td>
18 <td>删除</td>
19 </tr>
20 
21 <?php
22 include("DBDA.class.php");
23 
24 $dx=new DBDA();
25 
26 $sql="select * from news";
27 $r = $dx->Query($sql,1);
28 //$attr=$result->fetch_all();
29 foreach($r as $v)
30 {    
31 echo "<tr>
32 <td>{$v[0]}</td>
33 <td>{$v[1]}</td>
34 <td>{$v[2]}</td>
35 <td>{$v[3]}</td>
36 <td>{$v[4]}</td>
37 <td>{$v[5]}</td>
38 <td><a href='xiugai.php?newsid={$v[0]}'>修改</a></td>
39 <td><a href='shanchu.php?newsid={$v[0]}'}>删除</a></td>
40 </tr>";
41 
42 
43 }
44 
45 ?>
46 </table>
47 </body>
48 </html>

【5】查看新闻的处理页面----------chakanchuli.php

 1 <?php
 2 
 3 $newsid = $_POST["newsid"];
 4 $title = $_POST["title"];
 5 $author = $_POST["author"];
 6 $source = $_POST["source"];
 7 $content = $_POST["content"];
 8 $time = $_POST["shijian"];
 9 
10 include("DBDA.class.php");
11 
12 $dx=new DBDA();
13 
14 $sql = "update news set title = '{$title}',author = '{$author}',source = '{$source}',content = '{$content}',time= '{$time}' where newsid = '{$newsid}'";
15 
16 $result = $dx->query($sql);
17 if($result)
18 {
19     header("location:chakan.php");
20 }
21 else
22 {
23     echo "修改失败";
24 }
25 ?>

【6】删除处理页面--------shanchu.php

 1 <?php
 2 $newsid = $_GET["newsid"];
 3 var_dump($newsid);
 4 
 5 include("DBDA.class.php");
 6 
 7 $dx=new DBDA();
 8 
 9 $sql = "delete from news where newsid='{$newsid}'";
10 $r = $dx->Query($sql,2);
11 if($r)
12 {
13     header("location:chakan.php");
14 }
15 else
16 {
17     echo "删除失败！";
18 }

【7】修改页面---------xiugai.php

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 2 <html xmlns="http://www.w3.org/1999/xhtml">
 3 <head>
 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 5 <title>修改页面</title>
 6 </head>
 7 <body>
 8 <!--newsid--><center>
 9 <h1>修改页面</h1>
10 <?php
11 
12 $newsid = $_GET["newsid"];
13  
14 include("DBDA.class.php");
15 
16 $dx=new DBDA();
17 
18 $sql="select * from news where newsid='{$newsid}'";
19 $r = $dx->Query($sql);
20 
21 ?>
22 
23 
24 <form action="xiugaichuli.php" method="post">
25 <input type="hidden" name="newsid" value="<?php echo $r[0][0]; ?>"/>
26 
27 <div>标题:<input type="text" name="title" value="<?php echo $r[0][1];?>"/></div>
28 <div>作者:<input type="text" name="author" value="<?php echo $r[0][2];?>"/></div>
29 <div>来源:<input type="text" name="source" value="<?php echo $r[0][3];?>"/></div>
30 <div>内容:<textarea name="content" cols="100" rows="10"><?php echo $r[0][4];?></textarea></div>
31 
32 <div><input type="submit" value="修改"/></div>
33 <input type="hidden" name="newsid" value="<?php echo $newsid; ?>" />
34 
35 </form>
36 <!--<a href="chakan.php"><input type="button" value="查看"></a>-->
37 </center>
38 </body>
39 </html>

【8】修改的处理页面---------xiugaichuli.php

 1 <?php
 2  
 3 $newsid = $_POST["newsid"];
 4 $title = $_POST["title"];
 5 $Author = $_POST["author"];
 6 $source = $_POST["source"];
 7 $content  = $_POST["content"]; 
 8 
 9 
10 include("DBDA.class.php");
11 
12 $dx=new DBDA();
13 
14 $sql="update news set title='{$title}',author = '{$Author}',source ='{$source}',content='{$content}' where newsid = '{$newsid}'";  
15 echo $sql;
16 $r = $dx->Query($sql,0);
17 var_dump($r);
18 if($r)
19 {
20     header("location:chakan.php");
21 }
22 else
23 {
24     echo "修改失败！";
25 }
26 
27 
28 
29 
30 ?>