how to print user role in drupal 7 | render menu

<?php
global $user;
print_r( $user->roles);
//in_array(array(‘authenticated user’, ‘anonymous user’), $user->roles)
if (in_array(‘authenticated user’, $user->roles)) {
//do stuff here
}

$menu = menu_tree(‘menu-admin-form’);
$menuhtml = drupal_render($menu);

foreach($menu as $mm => $mmm)
{
//echo $mmm;
}

print_r($menuhtml);
?>

<?php
$menu = menu_tree(‘menu-admin-form’);
$menuhtml = drupal_render($menu);
print_r($menuhtml);

$block = module_invoke(‘menu’, ‘block_view’, ‘menu-admin-form’);
print render($block[‘content’]);
?>

<?php $main_menu_tree = menu_tree_all_data(‘menu-admin-form’); ?>
<?php $main_menu_expanded = menu_tree_output($main_menu_tree);?>

<?php print render($main_menu_expanded);?>