Uppercase (first char only) anything.

[gurler]

i am using profile field entries in postbit_legacy but i want to set all of the firts characters Uppercase.

in this case,
i want to try mb_convert_case or anything with PHP code but i dont know how to use php code on my postbit_legacy below with this code:

<vb:if condition="$post['field11']">
{vb:raw post.field11} <<<<< i want to change this entry's first character to uppercase.
</vb:if>

{vb:raw post.field11} output: umut mehmet gürler
i want to change: Umut Mehmet Gürler

note; i am going to use mb_convert_case because of the non-UTF8 chars.

<vb:if condition="$post['field11']">
$post['field11'] = mb_convert_encoding($post['field11'], "UTF-8", "UTF-8, ISO-8859-9, windows-1254, ascii");
{vb:raw post.field11} <<<<< i want to change this entry's first character to uppercase.
</vb:if>

does it work ?
no
can you help ?