php.net manual on your site

Hello,
i hope some one will answer me :unsure:
and i hope iam not posting in wrong forum :huh:

i want to know,
how people of phpbuilder.com has kept php.net's manual in their site.

i just wanted to know how is this possible

Hope someone helps me.
thanks in advance.

Well, there are downloads available. here.

sorry,
those downloads are to read offline,
but what i mean is,
http://www.phpbuilder.com/manual/

this is an exact copy of php.net's manual,

iam asking, how we can put manual like this in other sites,
there are many sites doing the same.

i just wanted to know, how this can be done.

So... download it, upload the downloaded files to a webserver.