This example demonstrates a PHP script that establishes a database connection for a clinic management system. The code defines server credentials and database parameters, then creates a connection using PHP’s built-in `mysqli` class. It shows how to instantiate the `mysqli` object with the hostname, username, password, and database name, which are set to localhost, root, root, and cascades_clinic respectively. The script serves as a reusable configuration file, allowing other PHP pages to include it for accessing the clinic’s data. The example highlights the standard procedural setup for MySQL database connectivity in PHP applications.