<?php

function _mkbh_account_page_user_username_available($username, $currentUser)
{
    $existingUser = user_load_by_name($username);

    if (!empty($existingUser) && $existingUser->uid != $currentUser->uid) {
        return FALSE;
    }

    return TRUE;
}

function _mkbh_account_page_user_mail_available($mail, $currentUser)
{
    $existingUser = user_load_by_mail($mail);

    if (!empty($existingUser) && $existingUser->uid != $currentUser->uid) {
        return FALSE;
    }

    return TRUE;
}