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php: $_SERVER['REMOTE_PORT'];
Posted by: iota
Date: February 18, 2007 09:26AM

Dear sir

why does $_SERVER['REMOTE_PORT'] give out new port number each time a client connects to the server? eg. 60442, 14300

How does it deal with port 80?

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Re: php: $_SERVER['REMOTE_PORT'];
Posted by: kogir
Date: February 18, 2007 04:19PM

TCP clients usually connect from a random port in the 1024-65535 range whenever they establish a connection. In the case of HTTP, the client connects from a random local port to port 80 on the server.

Assuming that you're running a standard website, your script should report that $_SERVER['SERVER_PORT'] is 80 every time.

See also http://en.wikipedia.org/wiki/Transmission_Control_Protocol#TCP_ports

-kogir

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