- mb_encode_mimeheader: 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?=');*/
$name = ""; // kanji
$mbox = "kru";
$doma = "gtinn.mon";
$addr = mb_encode_mimeheader($name, "ISO-8859-1", "Q");
echo $addr;