Php utf8 not working please help there is m connect db code

<?php session_start(); $db_server = 'mysql2.gear.host'; $db_username = 'adres'; $db_password = 'Js8j-_pGHzx6'; $db = "adres"; $conn = new mysqli($db_server, $db_username, $db_password, $db); if ($conn->connect_error) { die("Connection failed: " . $conn->connect_error); } mysqli_set_charset($conn,"utf8"); ?>

Hello,

I responded to your ticket, we will discuss this there.