php开发_留言板的CRUD(增，删，改，查)操作 - jerrylsxu

 1 create database form;
 2 
 3 use form;
 4 
 5 CREATE TABLE `message` (
 6   `id` tinyint(1) NOT NULL auto_increment,
 7   `user` varchar(25) NOT NULL,
 8   `title` varchar(50) NOT NULL,
 9   `content` tinytext NOT NULL,
10   `lastdate` date NOT NULL,
11   PRIMARY KEY  (`id`)
12 ) ENGINE=InnoDB DEFAULT CHARSET=gbk AUTO_INCREMENT=1 ;

1 <?php 2 $conn = @ mysql_connect("localhost", "root", "") or die("数据库链接错误");
3 mysql_select_db("form", $conn);
4 mysql_query("set names 'gbk'"); 
5 ?>

 1 <?php 2 include 'conn.php';
 3 if($_POST['submit']){
 4     $sql="INSERT INTO message(id,user,title,content,lastdate) VALUES (NULL, '$_POST[user]', '$_POST[title]', '$_POST[content]', now())";
 5     mysql_query($sql);
 6 
 7     //页面跳转，实现方式为javascript
 8     $url = "list.php";
 9     echo "<script language='javascript' type='text/javascript'>";
10     echo "window.location.href='$url'";
11     echo "";
12 }
13 ?>
14 <script type="text/javascript">
15 function checkPost(){
16 
17     if(addForm.user.value==""){
18         alert("请输入用户名");
19         addForm.user.focus();
20         return false;
21     }
22     if(addForm.title.value.length<5){
23         alert("标题不能少于5个字符");
24         addForm.title.focus();
25         return false;
26         }
27 }
28 </script>
29 

 1 <?php 2 include 'conn.php';
 3 ?>
 4 <?php 5 echo "<div align='center'><a href="add.php">继续添加</a>

 1 <?php 2 include 'conn.php';
 3 $id = $_GET['id'];
 4 $query="delete from message where id=".$id;
 5 mysql_query($query);
 6 ?>
 7 <?php 8 //页面跳转，实现方式为javascript
 9 $url = "list.php";
10 echo "<script language='javascript' type='text/javascript'>";
11 echo "window.location.href='$url'";
12 echo "";
13 ?>

 1 <?php 2 include 'conn.php';
 3 $id=$_GET[id];
 4 $query="SELECT * FROM message WHERE id =".$id;
 5 $result=mysql_query($query);
 6 while ($rs=mysql_fetch_array($result)){
 7 ?>
 8 

 1 <?php 2 include 'conn.php';
 3 $query="update message set user='$_POST[user]',title='$_POST[title]',content='$_POST[content]' where id='$_POST[id]'";
 4 mysql_query($query);
 5 ?>
 6 <?php 7 //页面跳转，实现方式为javascript
 8 $url = "list.php";
 9 echo "<script language='javascript' type='text/javascript'>";
10 echo "window.location.href='$url'";
11 echo "";
12 ?>