What tag opens information from a profile on the phpbb3 engine?

Question

phpBB

Hello, I'm trying to make a universal bbcode (not through the admin panel) using the example [flash] [url]
example bbcode
[bbcode=user id] design (avatar, name, and for example icq) [/bbcode] The design
fits in the script, and I already I do n’t know how much I suffer so that, based on the id or nickname (login), information from the profile is taken, namely, the avatar, nickname and contacts (ICQ Jabber, etc.)
Do not tell me how to set up the output of information based on the specified id or nickname
, the bbcode has already been made universal. connected and working.
But there is no conclusion. Can you tell me the tag by which you can call the request?
What is converted to output.
'mok' => ' $1 $2',
$1 is the output of the message id after the symbol =
$2 is a message.