Question : How to tie unicode db/php and apache correctly?

Hello,

The situation:
- PostgreSQL 7.3 database with encoding=Unicode
- PHP 4.3.2
- ISO-8859-1 php files in a standard Linux filesys (a php webapp, called Tutos (www.tutos.org))
- Apache 1.3.28

What I want:
- to be able to put data from web in db and get it from db to web correctly (preferrably UTF-8).

What have I done:

- set httpd.conf AddDefaultCharset utf-8
- set php.ini: default_charset=utf-8

What is wrong:

- static html pages come in utf-8, but php pages still come in ISO-8859-1 charset (as shown by Content-type: header);
- if I use chars outside the normal ASCII range in a query to database via the php webapp, I get no results (but this may be due to the webapp problems);
- if I use chars outside the normal ASCII range and before that reset the char encoding of the page to UTF manually,
I may get an error report by Tutos on the type of:
 Exec Resource id #40|DBerror: POSTGRES: ERROR: Invalid UNICODE character sequence found (0xe4ab6c)

If I let the pages remain in ISO-8859-1, then everything works, more or less, but the entries in database have entities instead of Unicode chars, ala: &#charcode; and this means I can't get proper sorting in db, and I am afraid I might have problems later, if I try to interface db with other front-ends.

The question is whether there is anything I can do in this particular case, and what are the general guidelines for working with unicode dbs with web (webserver settings/ engine)?

If you have a substantial answer to this, I am more than willing to give additional points.

Answer : How to tie unicode db/php and apache correctly?

pg_exec($db,"set client_encoding='unicode'");

sorry I am just guessing here