Steps for implementing IP jumps to the user's city _access

First go to the next most innocent IP database, and then do the following:
1. Run pure QQIP database with ShowIP.exe, point decompression, input file name, such as IP.txt, OK, get a txt file.
2. Open access, tools-Custom, Command tab, drag the Import options to the toolbar above.
3. Build a library, build a table, four fields
StartIP Type: Text (IP segment information for the relevant city)
EndIP Type: Text (IP segment information for the relevant city)
Country Type: text (related city name)
Reurl Type: text (you want to jump to the city path such as: Beijing http://bj.abc.com)
4. Click to import button, file type select text file, find just exported IP.txt file, imported to the table just built ~
Operations convert real IP to numbers, such as the IP segment in Beijing: 1.1.0.0-1.1.0.255
Startip:1*256*256*256+1*256*256+0*256+0 = 16842752 (this number is ultimately to be placed in the database)
endip:1*256*256*256+1*256*256+0*256+255 = 16843007 (this number is ultimately to be put into the database)
Available Programs batch processing, if not, and there is no time (like me) you go directly to the next network IP library, it has been processed, the following is part of the program:
USER_IP = Request.ServerVariables ("remote_addr") ' Gets the visitor IP
Userip_ary=split (User_ip, ".")
Tmp_userip=userip_ary (0) *256*256*256+userip_ary (1) *256*256+userip_ary (2) *256+userip_ary (3) ' converts IP to digital as required
' Identify the city where the user IP belongs from the database
Set Rs=server.createobject ("ADODB. Recordset ")
Sql= "SELECT * from IP where startip<=" &tmp_userip& "and endip>=" &tmp_userip
Rs.Open sql,conn,1,1
If Rs.eof Then
Response.Redirect "Index.asp" "if there is no such city or IP is not recognized, go to the first page, you can also specify pages
Else
Response.Redirect rs ("Reurl") ' If there is a go to the specified page
End If
Rs.close
Set rs=nothing
Put the above program to your virtual host default access to the home page! or other pages (of course you also have to set the default access in the Virtual host Control Panel is this file first) OK