wht r design patterns in php

[shivani.shm]

It will great help if someone could explain wht are design patterns in php

[Daniel0]

Patterns have been around for a long time, so part of me doesn't want to regurgitate their history yet another time. Still, this is an opportunity for me to provide my view of patterns and what makes them a worthwhile approach to describing design.

 

There's no generally accepted definition of a pattern, but perhaps the best place to start is Christopher Alexander, an inspiration for many pattern enthusiasts: "Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice" [Alexander et al.]. Alexander is an architect, so he was talking about buildings, but the definition works pretty nicely for software as well. The focus of the pattern is a particular solution, one that's both common and effective in dealing with one or more recurring problems. Another way of looking at it is that a pattern is a chunk of advice and the art of creating patterns is to divide up many pieces of advice into relatively independent chunks so that you can refer to them and discuss them more or less separately.

 

I hope that answers your question.