- mb_convert_encoding: documentation ( source)
<?php
/*mb_internal_encoding('ISO-8859-1');
echo 'Subject: ', mb_decode_mimeheader('=?ISO-8859-1?B?0JTQvtCx0LDQstC70LXQvSDQvdC+0LLRi9C5INC60L4=?=
=?ISO-8859-1?B?0LzQvNC10L3RgtCw0YDQuNC5INC6INC30LDQv9C40YHQuDogIns=?=
=?ISO-8859-1?B?UEFHRV9USVRMRX0i?=');*/
$utf8_2 = mb_convert_encoding('Добавлен новый комментарий к записи: "{PAGE_TITLE}"', 'UTF-8', 'ISO-8859-1');