Ouvre base user :

mysql_query("SET NAMES 'utf8'")

head : <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>

'formualire :<form action="'.$_SERVER['REQUEST_URI'].'" method="post" accept-charset="UTF-8">

php

initialisation du jeu de caractere UTF8 pour les fonctions du module php MB
    mb_internal_encoding('UTF-8');
    mb_regex_encoding('UTF-8');

htmlentities($variable,ENT_QUOTES,'UTF-8');

html_entity_decode($variable,ENT_QUOTES,'UTF-8');

htmlspecialchars ( string $string [, int $quote_style = ENT_COMPAT [, string $charset [, bool $double_encode = true ]]] )

htmlspecialchars_decode ( string $string [, int $quote_style = ENT_COMPAT ] )

get_html_translation_table ([ int $table = HTML_SPECIALCHARS [, int $quote_style = ENT_COMPAT ]] )

utf8_encode

utf8_decode

strtolower > mb_strtolower

strtoupper > mb_strtoupper

mb_convert_case

mb_substr

mb_strlen

base de donnée :

ALTER DATABASE `sauver` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci

CREATE DATABASE `toto` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

ALTER TABLE `ob_articles` CHANGE `art_titre` `art_titre` VARCHAR( 200 ) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL

CREATE TABLE `toto`.`article` (`texte` TEXT CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL) ENGINE = MYISAM CHARACTER SET utf8 COLLATE utf8_general_ci;