Use PHP to connect to the database to implement the message board function

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PHP implements the message board function:

1 The first is the login page:

 
  
  
  
  
  
 

 
 
  

  

   
开发部内部留言板
   

    用户名:
    
   
   

    口令：
    
   
   登录
  

 
 

2 After the login page is completed, you need to enter the login processing page, which is the messloginchuli.php submitted above

query($sql,0);
//var_dump($arr[0][0]);
if($arr[0][0]=$pwd && !empty($pwd)){
 $_SESSION["uid"]=$uid;
 header("location:message.php");
}

?>

The login page looks like this:

3. After the login is completed, you will enter the home page. The following is the table of the designed database and the code of the main page:

##

 
  
  
  
  
  
 

 
 
  
  

   发布信息
   退出系统
   
  query($sql,0);
    foreach($arr as $v){
     echo "";
    }
    ?>
    
   

   

    留言信息：
   
   
   

    

     
发送人
     
发送时间
     
接收人
     
信息内容
    
   
   

    

     
{$v[1]}
     
{$v[2]}
     
{$v[3]}
     
{$v[4]}
    
  

 

Exit the login system to implement user logout and return to the login page. The function code is as follows:

The code is written here, and the more important part is completed. Below It is time to enter the release information page, which is equivalent to the added page written before. The processing page is no different from before. The difference is that the current processing page is operated when the user is logged in, and all logins need to be logged in using session. The pages under the circumstances are connected

The effect of the main page is as shown in the figure:

4. The last is the information release page, where you can send information to anyone

The code is as follows:

##

 
  
  
  
  
  
 

 
 

 

  

   查看信息
   查看发送信息
   
  

   
   

     接收人:
     

      
       所有人
      query($sname,0);      
      //var_dump($arr[0][2]);
      foreach($arr as $v){
       echo "{$v[2]}";
      }
      ?>      
      
     
    

   
   

    信息内容:
    

     
    
   

   

    

     
     发送
     
    
   

  
 


 

Send The information page is as shown in the figure:

5. After publishing the information, you have to enter the processing page, which is the submitted infochuli.php, and finally return to send Information interface

query($sql);
if($arr && !empty($arr)){
 header("location:publish_info.php");
}else{
 echo "发送失败!";
}

?>

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