What is the purpose of initializing the MySQLi class in the globals.php file before including the class.init.php file in PHP?

Initializing the MySQLi class in the globals.php file before including the class.init.php file ensures that the database connection is established and available globally throughout the application. This helps in avoiding redundant code and makes it easier to access the database connection in different parts of the application without having to establish the connection multiple times.

// globals.php

// Database connection parameters
$host = 'localhost';
$username = 'root';
$password = '';
$database = 'my_database';

// Initialize MySQLi class
$mysqli = new mysqli($host, $username, $password, $database);

if ($mysqli->connect_error) {
    die('Connection failed: ' . $mysqli->connect_error);
}
```

```php
// class.init.php

// Include the globals file
include 'globals.php';

// Other initialization code
// ...