Урок 1 Подключение к бд mysql

<?php

$servername = "localhost";

$database = "databasename";

$username = "username";

$password = "password";

// Создаем соединение

$conn = mysqli_connect($servername, $username, $password, $database);

// Проверяем соединение

if (!$conn) {

die("Connection failed: " . mysqli_connect_error());

}

echo "Connected successfully";

mysqli_close($conn);

?>