Capture username and userid

[Tee Chee Ming]

Does anyone know how to capture username and userid after the member log in into vbulletin forum using php?I need to create custom page to run some functions by using these 2 input.

[Disasterpiece]

PHP Code:

global $vbulletin;

var_dump($vbulletin->userinfo); 

[Tee Chee Ming]

Why the output show NULL?

[Lynne]

Where did you put that code?

[Tee Chee Ming]

Maybe I put wrong place. By the way, I had solve the problem. Thanks.