Detection System IP address display user information-php Tutorial

Check that the IP address of the system displays user information

 
 
 Detect operating system and browser types
 
 
 
  
  
  
 
   
 
    
Organization Department
 
    
IP address
 
    
User
 
   
 
   
 
    
 
 
    
 
 
    
 
 
   
 
  
 
 
 

I do not know where it is wrong. I do not display the information now.

Reply to discussion (solution)

Do you want to obtain the visitor's ip address?

Yes. obtain the visitor's IP address and display the Query Database. if there is IP address information, the user information is displayed. if not, the user information is not displayed.

You can echo $ query_ip_dir; to see what SQL is. There should be no such record.

Because both HTTP_CLIENT_IP and HTTP_X_FORWARDED_FOR can be forged
Your program has no practical significance.

SELECT * FROM ip_manag WHERE address = '-1'

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