What are the best practices for passing values to PHP scripts without using form inputs?

When passing values to PHP scripts without using form inputs, one common method is to use query parameters in the URL. This can be done by appending key-value pairs to the URL and then accessing them in the PHP script using the $_GET superglobal array. Another approach is to use session variables to store and retrieve values across different pages without the need for form inputs.

// Using query parameters in the URL
$value = $_GET['value'];

// Using session variables
session_start();
$_SESSION['value'] = $value;