Answered Using WebLogin 1.1 with ModX Evolution

<?php
/* See if the page visitor is a logged in web user or manager user */
   $userName = $modx->getLoginUserName();

return $userName;
?>

[[username]]

<?php
#::::::::::::::::::::::::::::::::::::::::
# Snippet Name: CheckLogin
# Short Desc: Checks if a user is logged in and returns a linktext accordingly
# Version: 0.1
# Created By: Wim Beerens ([email protected])
#
# Date: November 26, 2006
#
# Changelog: 
# November 26, 2006 -- initial release
#
#::::::::::::::::::::::::::::::::::::::::
# Usage: 	
#	Checks if a user is logged in and returns a linktext accordingly
#       Snippet based on Personalize and WebLogin snippet
#       To be used uncached only
#
# Installation:
#       In the Manager create a new snipped called CheckLogin
#       and copy/paste this code into the new snippet
#       For ease of use click on the tab Properties
#       and copy/paste the following code into the Default Properties Field:
#       &logintext=Login link text;string; &logouttext=Logout link text;string;
#
# Params:	
#
#	&logintext [string] (optional) 
#		Linktext to be displayed when user is logged out (!)
#
#	&logouttext [string] (optional)
#		Linktext to be displayed when user is logged in (!)
#	
#
# Examples:
#
#	[!CheckLogin!] 
#
#	[!CheckLogin? &logintext=`Loginpage` &logouttext=`Logoutpage`!] 
#
#::::::::::::::::::::::::::::::::::::::::

# check if inside manager
if ($m = $modx->insideManager()) {
	return ''; # don't go any further when inside manager
}

# Snippet customize settings
$loginText	= isset($logintext)? $logintext:'Login';
$logoutText	= isset($logouttext)? $logouttext:'Logout';

# Check if user is logged in
$output = '';
$test = $modx->getLoginUserName();

if ($test == '') {
	$output = $loginText;
} else {
	$output = $logoutText;
}

return $output;
?>

[!checklogin? &logintext=`LOGIN TEXT` &logouttext=`LOGOUT TEXT Welcome [[username]]`!]

[!checklogin? &logintext=`LOGIN TEXT` &logouttext=`LOGOUT TEXT Welcome [[username]]`!]