How to unset certain admin menu groups in wordpress for specific (named) groups of users.

unset-admin-menu.php

<?php
/*
Plugin Name:Unset Menu Items
Plugin URI:	http://example.com
Description:How to unset certain admin menu groups in wordpress for specific (named) groups of users.
Author:		Franz Josef Kaiser
Author URI: http://example.com
Version:	0.1
License:	extended MIT/Expat license

(c) Copyright 2010-2011 - Franz Josef Kaiser
*/

# How to add a user to a user group from inside your functions.php file
function test_me( $user_group_A )
{
	$user_group_A[] = 'Take your own name for testing';

	return $user_group_A;
}
# add_filter( 'user_group_A', 'test_me' );


function remove_admin_menu_items( $menu )
{
	global $menu, $submenu, $current_user;
	get_currentuserinfo();

	$parent = get_admin_page_parent();

	// don't unset items for admins
	#if ( current_user_can( 'manage_options' ) )
		#return $menu;

	// The following menu item groups contain all main menu items
	// If you need submenu items, take a look at the foreach loop $item/$data & use the commented <pre>/print_r

	// Menu Item Groups
	// Use the filters to adjust them on demand
	$menu_itemset_A = array(
		 'index.php'
		,'edit.php'
		,'upload.php'
		,'link-manager.php'
		,'edit.php?post_type=page'
	);
	$menu_itemset_A = apply_filters( 'menu_itemset_A', $menu_itemset_A );

	$menu_itemset_B = array(
		 'edit-comments.php'
		,'themes.php'
		,'plugins.php'
		,'users.php'
		,'tools.php'
		,'options-general.php'
	);
	$menu_itemset_B = apply_filters( 'menu_itemset_B', $menu_itemset_B );

	// Separators - in case someone wants to remove them too
	$separators = array(
		 'separator1'
		,'separator2'
		,'separator-last'
	);

	// User Groups
	// Use the filters to adjust them on demand
	$user_group_A = array(
		 'User Login Name A'
		,'User Login Name B'
		,'User Login Name C'
		,'...'
	);
	$user_group_A = apply_filters( 'user_group_A', $user_group_A );

	$user_group_B = array(
		 'User Login Name E'
		,'User Login Name F'
		,'User Login Name G'
		,'...'
	);
	$user_group_B = apply_filters( 'user_group_B', $user_group_B );

	foreach ( $menu as $item => $data )
	{
		// Unset Menu Group items A
		// Check if user login name is in group A
		if ( in_array( $current_user->user_login, $user_group_A ) )
		{
			#if ( $parent == $menu[$item][2] )
				#wp_die( 'You do not have sufficient permissions to access this page.' );

			if ( in_array( $menu[$item][2], $menu_itemset_A ) )
				unset( $menu[$item] );
		}

		// Unset Menu Group items B
		// Check if user login name is in group B
		elseif ( in_array( $current_user->user_login, $user_group_B ) )
		{
			#if ( $parent == $menu[$item][2] )
				#wp_die( 'You do not have sufficient permissions to access this page.' );

			if ( $parent == $menu[$item][2] )
				unset( $menu[$item] );
		}

		// default behavior
		else 
		{
			// do something ... or nothing
		}
	}

	// Check if it did what we wanted
	# echo '<pre>';
	# 	print_r($menu);
	# echo '</pre>';

	return $menu;
}
add_filter( 'add_menu_classes', 'remove_admin_menu_items' );
?>