conn.php連接后台數據庫

<?php
$host="localhost";
$db_user="root"; //數據庫用戶
$db_pass=""; //數據庫密碼
$db_name="class1"; //數據庫
$timezone = "Asia/Shanghai";

$link=mysqli_connect($host,$db_user,$db_pass,$db_name);//連接
mysqli_query($link,"SET names UTF8");//執行

header("Content-Type: text/html; charset=utf-8");
date_default_timezone_set($timezone); //北京時間
?>