CRUD (add, delete, modify, check) operations for php message board development

CRUD (add, delete, modify, check) operations for php message board development_PHP tutorial

WBOY

Release： 2016-07-21 15:18:59

Original

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Project structure:

Add page: Explanation: Only pay attention to the operation here, and there is no time for the artist of the interface. I hope everyone understands ...

List page:

Modify page:

SQL required in the project:

Copy code The code is as follows:

create database form; 

use form; 

CREATE TABLE `message` ( 
`id` tinyint(1) NOT NULL auto_increment, 
`user` varchar(25) NOT NULL, 
 `title` varchar(50) NOT NULL, 
`content` tinytext NOT NULL, 
`lastdate` date NOT NULL, 
PRIMARY KEY (`id`) 
) ENGINE=InnoDB DEFAULT CHARSET= gbk AUTO_INCREMENT=1; 

 

conn.php

Copy code The code is as follows:

$conn = @ mysql_connect("localhost", "root", "") or die("Database link error"); 
mysql_select_db("form", $conn); 
mysql_query("set names 'gbk'"); 
?> 

 

add.php

Copy code The code is as follows:

include 'conn.php';
if($_POST['submit']){
$sql="INSERT INTO message(id,user,title,content,lastdate) VALUES (NULL, '$_POST[user]', '$_POST[title]', '$_POST[content]', now())";
mysql_query ($sql);

//Page jump, implemented by javascript
$url = "list.php";
echo "";
}
?>
< ;script type="text/javascript">
function checkPost(){

if(addForm.user.value==""){
alert("Please enter username") ;
addForm.user.focus();
return false;
}
if(addForm.title.value.length<5){
alert("The title cannot be less than 5 characters");
addForm.title.focus();
return false;
}
}

list .php

Copy code The code is as follows:

include 'conn.php';
?>
echo "

继续添加

";
?>

$sql="select * from message order by id";
$query=mysql_query($sql);
while ($row=mysql_fetch_array($query)){
?>

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delete.php

复制代码代码如下:

 
include 'conn.php'; 
$id = $_GET['id']; 
$query="delete from message where id=".$id; 
mysql_query($query); 
?> 
//页面跳转，实现方式为javascript 
$url = "list.php"; 
echo ""; 
?> 

preEdit.php

复制代码代码如下:

include 'conn.php';
$id=$_GET[id];
$query="SELECT * FROM message WHERE id =".$id;
$result=mysql_query($query);
while ($rs=mysql_fetch_array($result)){
?>

postEdit.php

复制代码代码如下:

 
include 'conn.php'; 
$query="update message set user='$_POST[user]',title='$_POST[title]',content='$_POST[content]' where id='$_POST[id]'"; 
mysql_query($query); 
?> 
//页面跳转，实现方式为javascript 
$url = "list.php"; 
echo ""; 
?> 