Function ssi_welcome
Display a welcome message, like: Hey, User, you have 0 messages, 0 are new.
		
		Package: SMF
Copyright: 2020 Simple Machines and individual contributors
License: BSD
Author: Simple Machines https://www.simplemachines.org
Located at SSI.php
	
	Copyright: 2020 Simple Machines and individual contributors
License: BSD
Author: Simple Machines https://www.simplemachines.org
Located at SSI.php
string | 
		$output_method = 'echo' | 
		The output method. If 'echo', will display everything. Otherwise returns an array of user info. | 
			|array
		 | 
		Displays a welcome message or returns an array of user data depending on output_method. |