In what situations would it be more appropriate to use a POST request versus a GET request when retrieving data from a PHP server?

When retrieving data from a PHP server, it is more appropriate to use a POST request when sending sensitive information, such as login credentials or personal data, as it is more secure than a GET request. GET requests append data to the URL, making it visible in the browser's address bar and potentially exposing sensitive information. POST requests send data in the body of the request, keeping it hidden from view.

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
  // Process POST request to retrieve data securely
} else {
  // Handle other request methods
}