What are some of the most popular open source projects in PHP? Beginners do not understand, the predecessors said that the solution to the idea

What are some of the most popular open source projects in PHP? Novice do not understand, seniors say
Like the Dream CMS (listen to what others say, do not know) and so on, which is to be mastered?

And how do you learn these open source projects??

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Make a Dede source to see again, first will use, edge change side with, think more, can learn a little more about the template inside the marrow
To say master, the foundation of the html/js you have to be, PHP also have to point, encountered do not understand the PHP manual
PHP Manual: http://php.chinaunix.net/manual/zh/
DEDECMS Manual: Http://tools.dedecms.com/uploads/docs/dede_tpl/index.htm
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is WordPress the best?
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Joomal drupal WordPress dedecms ecshop Magento These several use more. There's actually a lot more.
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Many ...
Framework... Cms... Electronic commerce... BLOG ... Forum..... Each class has a dozens of relatively popular bar.

See what kind you want to be ...

If you study, you can do that.

In general, look at the newer, more popular
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There are two development documents for many open source items. But you better have a certain foundation, or you'll be miserable when you're familiar with the development of two times and back to the original.
Don't go deep into the place, look at the frame, look at the flow, look at the idea ...

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