What are the best practices for transferring data, such as the generated number, between multiple PHP files within the same session?

When transferring data between multiple PHP files within the same session, one common approach is to use session variables. You can store the generated number in a session variable in one PHP file and then access it in another PHP file by retrieving the value from the session. This ensures that the data persists across different files during the same session.

// File 1: Store generated number in session variable
session_start();
$generatedNumber = rand(1, 100);
$_SESSION['generatedNumber'] = $generatedNumber;
```

```php
// File 2: Retrieve generated number from session variable
session_start();
if(isset($_SESSION['generatedNumber'])){
    $generatedNumber = $_SESSION['generatedNumber'];
    echo "Generated Number: " . $generatedNumber;
} else {
    echo "Generated Number not found in session.";
}