Brother, I made an IP judge city to jump, put in public files on the presence of non-stop access to jump

I made an IP judge city to jump, put in the public file on the presence of non-stop access to jump
I made an IP judgment city for a two-level domain jump, File for ipaddress.php, put the file in the public file inside the open URL will appear nonstop access to jump, now there is any way to achieve this jump but do not have this endless access to the problem, I have the idea of using cookies, but do not know what to do, which elders help busy.
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In fact, you do not need this JS code
Since you are based on the user's IP jump corresponding to the two-level domain name, then you should have a city (region) and a two-level domain name of the table
When the city (region) from the IP name, from this table to jump on the two-level domain name can be (the header function), of course, and $_server[' http_host ') compared, it is no longer jump
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After the address is given a flag, for example, Transf=1, the page first accepts request[""]==1, do not perform judgment.
How can you say you're dead?
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Very simple, primary domain www.xxx.com
Sub-station domain name, bj.xxx.com, xa.xxx.com, gz.xxx.com ....

From the WWW request, according to the IP jump to the station, the station code does not need to jump, simply judge the domain name and then use the header () to jump on the good.

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