new menu removal attempt

function remove_menus () {
global $menu, $submenu, $user_ID;
    $the_user = new WP_User($user_ID);
    $valid_page = "admin.php?page=contact-form-7/admin/admin.php";
    $restricted = array('index.php','edit.php','categories.php','upload.php','link-manager.php','edit-pages.php','edit-comments.php', 'themes.php', 'plugins.php', 'users.php', 'profile.php', 'tools.php', 'options-general.php');
    $restricted_str = 'widgets.php';
    end ($menu);
    while (prev($menu)){
        $menu_item = $menu[key($menu)];
        $restricted_str .= '|'.$menu_item[2];
        if(in_array($menu_item[2] , $restricted)){
            $submenu_item = $submenu[$menu_item[2]];
            if($submenu_item != NULL){
                $tmp = $submenu_item;
                $max = array_pop(array_keys($tmp));
                for($i = $max; $i > 0;$i-=5){
 
                     if($submenu_item[$i] != NULL){
                        $restricted_str .= '|'.$submenu[$menu_item[2]][$i][2];
                        unset($submenu[$menu_item[2]][$i]);
                    }
                }
            }
            unset($menu[key($menu)]);
        }
    }
    $result = preg_match('/(.*?)\/wp-admin\/?('.$restricted_str.')??(('.$restricted_str.'){1})(.*?)/',$_SERVER['REQUEST_URI']);
    if ($result != 0 && $result != FALSE){
        wp_redirect(get_option('siteurl') . '/wp-admin/' . $valid_page);
        exit(0);
    }
}
add_action('admin_menu', 'remove_menus');