What are the best practices for handling HTTP requests in PHP when the client and server require different methods (GET vs POST)?

When the client and server require different methods (GET vs POST) for handling HTTP requests in PHP, one common approach is to check the request method and handle the request accordingly. This can be done by using conditional statements to determine the method used by the client and then processing the request based on that method.

if ($_SERVER['REQUEST_METHOD'] === 'GET') {
    // Handle GET request
    // Example: Retrieve data from database and display it
} elseif ($_SERVER['REQUEST_METHOD'] === 'POST') {
    // Handle POST request
    // Example: Insert data into database
} else {
    // Handle other request methods if needed
}