PHP development simple post bar connection database function

Public configuration file config.php

<?php
	header("Content-type:text/html;charset=utf-8");
	define('HOST','127.0.0.1');
	define('USERNAME','root');
	define('PASSWORD','root');
?>

Program explanation:

• Settings Determine the encoding format of the file

• Define the host name, database name, and password as constants

Public connection database file connect.php

<?php 
require_once('config.php');
$conn = mysqli_connect(HOST,USERNAME,PASSWORD);//数据库帐号密码为安装数据库时设置
if(mysqli_errno($conn)){
echo mysqli_errno($conn);
exit;
}
mysqli_select_db($conn,"tieba");
mysqli_set_charset($conn,'utf8'); 
?>

Program explanation:

• ##Introduced the configuration file

• Connect to the database, select the tieba database, and set the encoding format to utf8