如何使用PHP连接MySQL服务器？

Question

我正在尝试使用PHP连接到我的MySQL服务器，但我一直收到“无法获得结果”。在我的网页上。这是我正在使用的代码。

<?PHP
	error_reporting(1);
	
	//Connect to MySQL server.
	$mysqli = new MySQLi('localhost', 'username', 'password', 'login') or die(mysql_error());
	
	//Query the database.
	$result = $mysqli->query("SELECT * FROM users");
	
	//Count the returned rows.
	if($result->num_rows != 0){
		//Convert query into array.
		while($rows = $result->fetch_asocc()) {
			$id = $rows['ID'];
			$username = $rows['Username'];
			$email = $rows['Email'];
			$password = $rows['Password'];
			
			//Display results.
			echo "ID: $id\nUsername: $username\nE-Mail: $email\nPassword: $password\n";
		}
	} else {
		echo "Failed to get results.";
	}
	
?>