$db=[
   'host'=>'127.0.0.1',本機(jī)IP地址
   'user'=>'root',數(shù)據(jù)庫賬號
   'pass'=>'root',數(shù)據(jù)庫密碼
   'name' =>'php',數(shù)據(jù)庫名稱
   'charset'=>'utf8',數(shù)據(jù)庫編碼
];

require 'config.php';引進(jìn)config.php配置文件
error_reporting(E_ALL ^E_WARNING)

$mysqli = new mysqli($db['host'],$db['user'],$db['pass'],$db['name'],$db['charset']);

if ($mysqli->connect_errno) {
    die('連接錯誤'.$mysqli->connect_errno.': '. $mysqli->connect_error);
}
echo '<h1>連接成功</h1>';

$mysqli->select_db($db['name']);

$mysqli->set_charset($db['charset']);