get userID or profileID in seperate php file

I want to use the userID or memberID in a php file.

How do i do this?

do i need to include a file and then

$iLoggedId = getLoggedId();
$aProfile = getProfileInfo($iLoggedId);

Please advise

I can not answer this off the top of my head.  If you do a bit of searching, there are other threads on the forum speaking of this.  Some of the functions to retrieve user ID; profile info, are not available on all pages; which page you are placing the php block on will matter.  You may want to retrieve the current logged in user ID from the session cookie. 

the member id is stored as a cookie. So, using the below variable should work on any page - if you are looking for the id of the person who is logged in.

$_COOKIE['memberID']

$_COOKIE['memberID'] it is.

thanx i found it.