Secure to save MySql Info

In order to save the MySql credentials in secure way and follows the below steps:

1. The root of my webserver is "/public_html/" I create a folder lets say for example /private/"
2. This location is not accesible to others externally as it does not have url being one level above the root folder.
3. In that place a config.ini at "/private/config.ini"
The config.ini contains the database login credentials:

[database]
servername = localhost
username = admin
password = password
dbname = db_main

Then create a php function within the root lets say for example at "/public_html/includes/dbconnect.php" Contents of dbconnect.php:

<?php 
$config = parse_ini_file('../private/config.ini');
$connection = mysqli_connect($config['servername'],$config['username'],$config['password'],$config['dbname']);
?>

{/}

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