What is the significance of the error message "Deprecated: Function session_register() is deprecated" in PHP 5.3.3?

The error message "Deprecated: Function session_register() is deprecated" in PHP 5.3.3 indicates that the function session_register() is no longer supported and should not be used. To resolve this issue, you should update your code to use the $_SESSION superglobal array to register session variables instead.

// Replace session_register() with direct assignment to $_SESSION
$_SESSION['variable_name'] = $value;