how can I benefit from php source code?

[yozloy]

How can I find out how each build-in function in php construct by using php source code?
Is there a way to look into the encapsulation element to find out how they are coded?

for example I think the foreach() function is kinda like loop, so I want to know how the foreach function is coded in the source code.

T

[nevvermind]

http://php.net/downloads.php

Good luck. You'll need it.

That's the most difficult method to learn a language construct I've ever read and heard. I guess that php-encyclopedia - namely, its online documentation - isn't good enough. I think I admire you.