Advanced PHP sessions [closed]

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i'm looking for an advanced tutorial about PHP sessions. With a deep understanding of how they works, avoiding to get into the PHP source code (the Zend engine).

EDIT

I wanted to avoid the "PHP Source Code" 开发者_Python百科(as my original question says), which means, avoid the C code from the Zend Engine (at that moment).

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PHP sessions manual. WARNING: Has PHP Code.

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If you want a decent tutorial on PHP sessions, I would look over here.

Note that it's going to be very hard to gain a "deep understanding" of how they work without getting into the PHP code.

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There is the same mechanism with java/servlet if you can't bear php...

look for getSession in HttpServletRequest