php数据访问之增删改查操作
发布:smiling 来源: PHP粉丝网 添加日期:2019-07-28 14:00:13 浏览: 评论:0
增删改查操作小练习,大家练练手吧
一、查看新闻页面-----主页面
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
- <title>查看新闻</title>
- <h1>查看新闻</h1>
- <?php
- $db=new MySQLi("localhost","root","","mydb");
- !mysqli_connect_error() or die("连接失败!");
- $sql="select * from news";
- $result=$db->query($sql);
- $arr=$result->fetch_all();
- foreach ($arr as $v)
- {
- echo "";
- }
- ?>
- <table width="100%" border="1" cellpadding="0" cellspacing="0">
- <tbody><tr>
- <td>id</td>
- <td>title</td>
- <td>author</td>
- <td>source</td>
- <td>content</td>
- <td>date</td>
- <td>update</td>
- <td>delete</td>
- </tr><tr>
- <td>{$v[0]}</td>
- <td>{$v[1]}</td>
- <td>{$v[2]}</td>
- <td>{$v[3]}</td>
- <td>{$v[4]}</td>
- <td>{$v[5]}</td>
- <td><a href="Update.php?newsid={$v[0]}">update</a></td>
- <td><a href="Delete.php?newsid={$v[0]}">delete</a></td>
- </tr></tbody></table>
- <br>
- <br>
- <div class="xw"><a href="xinwen.php">发布新闻</a></div>
二、发布新闻页面-----添加内容
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
- <title>发布新闻</title>
- <style>
- .xw
- {
- margin-top:10px;
- margin-left:400px;
- border:thick;
- }
- .a
- {
- float:left;
- }
- </style>
- <h1><center>发布新闻</center></h1>
- <form action="AddChu.php" method="post">
- <div class="xw">标题:<input type="text" name="title" style="width:400px"></div>
- <div class="xw">作者:<input type="text" name="author"></div>
- <div class="xw">来源:<input type="text" name="source"></div>
- <div class="xw">内容:
- <textarea rows="10" cols="80" name="content"></textarea></div>
- <div class="a"><input type="submit" value="提交" style="margin-left:600px;"></div>
- <div class="a"><a href="ChaKan.php"><input type="button" value="查看" style="margin-left:6px;"></a></div>
- </form>
提交内容后的处理:
- <?php
- $newsid=$_POST["newsid"];
- $title=$_POST["title"];
- $author=$_POST["author"];
- $source=$_POST["source"];
- $content=$_POST["content"];
- $time=date("Y-m-d",time());
- $db=new MySQLi("localhost","root","","mydb");
- !mysqli_connect_error() or die("联系失败!");
- $sql="insert into news values('{$newsid}','{$title}','{$author}','{$source}','{$content}','{$time}')";
- $result=$db->query($sql);
- if($result)
- {
- header ("location:xinwen.php");
- }
- else
- {
- echo "添加新闻失败!";
- }
三、删除内容处理
- <?php
- $newsid=$_GET["newsid"];
- $db=new MySQLi("localhost","root","","mydb");
- !mysqli_connect_error() or die("连接失败!");
- $sql="delete from news where newsid='{$newsid}'";
- $result=$db->query($sql);
- if($result)
- {
- header ("location:ChaKan.php");
- }
- else
- {
- echo "删除数据失败";
- }
- ?>
四、修改新闻页面----修改新闻内容后提交查看
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
- <title>修改新闻</title>
- <style>
- .xw
- {
- margin-top:10px;
- margin-left:400px;
- border:thick;
- }
- .a
- {
- float:left;
- }
- </style>
- <h1><center>修改新闻</center></h1>
- <?php
- $newsid = $_GET["newsid"];
- $db = new MySQLi("localhost","root","","mydb");
- $sinfo = "select * from news where newsid='{$newsid}'";
- $r = $db->query($sinfo);
- $arr = $r->fetch_row(); //这个人的所有信息
- ?>
- <form action="UpdateChu.php" method="post">
- <div class="xw"><input type="hidden" name="newsid" value="<?php echo $arr[0] ?>"></div>
- <div class="xw">标题:<input type="text" name="title" style="width:400px" value="<?php echo $arr[1] ?>"></div>
- <div class="xw">作者:<input type="text" name="author" value="<?php echo $arr[2] ?>"></div>
- <div class="xw">来源:<input type="text" name="source" value="<?php echo $arr[3] ?>"></div>
- <div class="xw">内容:
- <textarea rows="10" cols="80" name="content"><?php echo $arr[4] ?></textarea></div>
- <div class="a"><input type="submit" value="修改" style="margin-left:600px;"></div>
- <div class="a"><a href="ChaKan.php"><input type="button" value="查看" style="margin-left:6px;"></a></div>
- </form>
提交修改内容后进行处理:
- <?php
- $newsid=$_POST["newsid"];
- $title=$_POST["title"];
- $author=$_POST["author"];
- $source=$_POST["source"];
- $content=$_POST["content"];
- $time=date("Y-m-d",time());
- $db=new MySQLi("localhost","root","","mydb");
- !mysqli_connect_error() or die("联系失败!");
- $sql="update news set title='{$title}',author='{$author}',source='{$source}',content='{$content}',time='{$time}' where newsid='{$newsid}'";
- $result=$db->query($sql);
- if($result)
- {
- header ("location:Update.php");
- }
- else
- {
- echo "修改数据失败!";
- }
以上就是本文的全部内容,希望对大家学习php程序设计有所帮助。
Tags: php增删改查操作
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