What are the layers of N-tier structure and their functions for WEB Development in PHP?

Posted by Starx on Stack Overflow See other posts from Stack Overflow or by Starx
Published on 2010-05-14T11:22:22Z Indexed on 2010/05/14 11:24 UTC
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php

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web-programming

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oop

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n-tier

Can anyone can tell me the N-tier Structure used in Web Programming?

Primarily, in 3 tier structure one is presentation layer, another is business logic layer and last is database access layer.

But for N-tier or 4 tier structure what are the layers and what sort of functions do they hold on them? Please explain me with a brief example of each.

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