/**
 * Check if current user is administrator
 */
function is_administrator()
{
    $user = cm_get_current_user();
    if ($user->type == 'admin' || $user->type == 'administrator') {
        return true;
    }
    return false;
}
<?php

function cm()
{
    if (is_administrator()) {
        cm_redirect(admin_url());
    }
}
cm_get_current_user();