The function of translating a line from transliteration, write it yourself?

Question

Drupal

Drupal has a transliteration module that allows you to translate strings and file names into transliteration. In my project, in particular, I use the function of this module:

<?php
// переводим строку в транслит
transliteration_get($string);
?>

but, unfortunately for myself, I discovered that there is no inverse function, i.e. it is necessary to translate from transliteration into Russian - is it really possible to write it yourself?

Answer 1

But why? It still won't translate back.
Do you have $string