HTML encode Cyrillic characters

<?php
// used this for encoding entities: http://htmlentities.net/
add_filter("gform_name_first", "change_name_first", 10, 2);
function change_name_first($label, $form_id){
    return "&#1060;&#1072;&#1084;&#1080;&#1083;&#1080;&#1103;";
}

add_filter("gform_name_last", "change_name_last", 10, 2);
function change_name_last($label, $form_id){
    return "&#1048;&#1084;&#1103;";
}