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

 <?php

 class DBDA

 {

     public $fuwuqi="localhost";  //服务器地址

     public $yonghuming="root";//用户名

     public $mima="";//密码    

     public $dbconnect;//连接对象

     //操作数据库的方法

     //$sql代表需要执行的SQL语句

     //$type代表SQL语句的类型，1代表查询，2代表增删改

     //$shujukuming代表数据库的名称

     //如果是查询，返回二维数组

     //如果是增删改，返回true或false

     function Query($sql,$type=1,$shujukuming="newssystem")

     {

         //造连接对象

         $this->dbconnect = new MySQLi($this->fuwuqi,$this->yonghuming,$this->mima,$shujukuming);

         //判断是否出错

         if(!mysqli_connect_error())

         {

             //如果连接成功,执行SQL语句

             $result = $this->dbconnect->query($sql);

             //根据语句类型判断

             if($type==1)

             {

                //如果是查询语句,返回二维数组

                return $result->fetch_all();

             }

             else

             {

                 //如果是其他语句，返回true或false

                return $result;

             }

         }

         else

         {

             return"连接失败";

         }

     }

 }

 ?>

【3】发布新闻页面---------fabuxinwen.php

 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

 <html xmlns="http://www.w3.org/1999/xhtml">

 <head>

 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

 <title>无标题文档</title>

 </head>

 <body>

 <center><h1>发布新闻</h1> 

 <form action="fabuxinwenchuli.php" method="post">

 <div>标题：<input type="text" name="title" style="width:400px"/></div><br />

 <div>作者：<input type="text" name="Author" style="width:200px"/></div><br />

 <div>来源：<input type="text" name="source" style="width:400px"/></div><br />

 <div>内容：<textarea name="content" cols="50" rows="4" ></textarea></div><br />

 <br />

 <div><input type="submit" name="tijiao" value="提交"  />&nbsp;

 <a href="chakan.php"><input type="button" value="查看"/></a></div>

 </form>

 </center>

 </body>

 </html>

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

 <?php

 $title = $_POST["title"];

 $Author = $_POST["Author"];

 $source = $_POST["source"];

 $content  = $_POST["content"];

 $shijian= date("Y-m-d H:i:s");

 include("DBDA.class.php");

 $dx=new DBDA();

 $sql="insert into news values('','{$title}','{$Author}','{$source}','{$content}','{$shijian}')";

 $r = $dx->Query($sql,0);

 if($r)

 {

     header("location:fabuxinwen.php");

 }

 else

 {

     echo "修改失败！";

 }

 ?>

【4】查看新闻页面----------chakan.php

 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

 <html xmlns="http://www.w3.org/1999/xhtml">

 <head>

 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

 <title>查看新闻</title>

 <!--点击”查看“按钮，显示‘查看新闻’页面-->

 </head>

 <body>

 <table width="1000px" cellpadding="1" border="1"ellspacing="1">

 <tr>

 <td>编号</td>

 <td>标题</td>

 <td>作者</td>

 <td>来源</td>

 <td>内容</td>

 <td>时间</td>

 <td>修改</td>

 <td>删除</td>

 </tr>

 <?php

 include("DBDA.class.php");

 $dx=new DBDA();

 $sql="select * from news";

 $r = $dx->Query($sql,1);

 //$attr=$result->fetch_all();

 foreach($r as $v)

 {

 echo "<tr>

 <td>{$v[0]}</td>

 <td>{$v[1]}</td>

 <td>{$v[2]}</td>

 <td>{$v[3]}</td>

 <td>{$v[4]}</td>

 <td>{$v[5]}</td>

 <td><a href='xiugai.php?newsid={$v[0]}'>修改</a></td>

 <td><a href='shanchu.php?newsid={$v[0]}'}>删除</a></td>

 </tr>";

 }

 ?>

 </table>

 </body>

 </html>

【5】查看新闻的处理页面----------chakanchuli.php

 <?php

 $newsid = $_POST["newsid"];

 $title = $_POST["title"];

 $author = $_POST["author"];

 $source = $_POST["source"];

 $content = $_POST["content"];

 $time = $_POST["shijian"];

 include("DBDA.class.php");

 $dx=new DBDA();

 $sql = "update news set title = '{$title}',author = '{$author}',source = '{$source}',content = '{$content}',time= '{$time}' where newsid = '{$newsid}'";

 $result = $dx->query($sql);

 if($result)

 {

     header("location:chakan.php");

 }

 else

 {

     echo "修改失败";

 }

 ?>

【6】删除处理页面--------shanchu.php

 <?php

 $newsid = $_GET["newsid"];

 var_dump($newsid);

 include("DBDA.class.php");

 $dx=new DBDA();

 $sql = "delete from news where newsid='{$newsid}'";

 $r = $dx->Query($sql,2);

 if($r)

 {

     header("location:chakan.php");

 }

 else

 {

     echo "删除失败！";

 }

【7】修改页面---------xiugai.php

 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

 <html xmlns="http://www.w3.org/1999/xhtml">

 <head>

 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

 <title>修改页面</title>

 </head>

 <body>

 <!--newsid--><center>

 <h1>修改页面</h1>

 <?php

 $newsid = $_GET["newsid"];

 include("DBDA.class.php");

 $dx=new DBDA();

 $sql="select * from news where newsid='{$newsid}'";

 $r = $dx->Query($sql);

 ?>

 <form action="xiugaichuli.php" method="post">

 <input type="hidden" name="newsid" value="<?php echo $r[0][0]; ?>"/>

 <div>标题:<input type="text" name="title" value="<?php echo $r[0][1];?>"/></div>

 <div>作者:<input type="text" name="author" value="<?php echo $r[0][2];?>"/></div>

 <div>来源:<input type="text" name="source" value="<?php echo $r[0][3];?>"/></div>

 <div>内容:<textarea name="content" cols="100" rows="10"><?php echo $r[0][4];?></textarea></div>

 <div><input type="submit" value="修改"/></div>

 <input type="hidden" name="newsid" value="<?php echo $newsid; ?>" />

 </form>

 <!--<a href="chakan.php"><input type="button" value="查看"></a>-->

 </center>

 </body>

 </html>

【8】修改的处理页面---------xiugaichuli.php

 <?php

 $newsid = $_POST["newsid"];

 $title = $_POST["title"];

 $Author = $_POST["author"];

 $source = $_POST["source"];

 $content  = $_POST["content"]; 

 include("DBDA.class.php");

 $dx=new DBDA();

 $sql="update news set title='{$title}',author = '{$Author}',source ='{$source}',content='{$content}' where newsid = '{$newsid}'";

 echo $sql;

 $r = $dx->Query($sql,0);

 var_dump($r);

 if($r)

 {

     header("location:chakan.php");

 }

 else

 {

     echo "修改失败！";

 }

 ?>

巴特西

PHP----练习-----新闻管理----增删改查

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