How can developers address issues with variable naming conflicts between form variables and session variables in PHP?

When naming conflicts arise between form variables and session variables in PHP, developers can prefix their session variables with a unique identifier to differentiate them from form variables. This can help avoid naming conflicts and ensure that the correct variable is being accessed and manipulated within the code.

// Prefixing session variables with 'sess_' to avoid conflicts with form variables
$_SESSION['sess_username'] = $_POST['username'];
$_SESSION['sess_email'] = $_POST['email'];