How to recode so that in the source code the text is not supposedly such letters & # 1 0 5 6;?

Question

PHP

In the source code, the text looks like it was typed with special characters, how can I recode it into a normal form?

<?php
$i = '&#1056;&#1086;&#1084;&#1072;&#1085;';

echo    htmlspecialchars_decode($i);

htmlspecialchars_decode not working

Answer 1

echo mb_convert_encoding($i, 'UTF-8', 'HTML-ENTITIES');

Answer 2

php.net/manual/en/function.html-entity-decode.php