Determining URIs for plugin pages

You can dynamically generate those URLs like this:

$url = add_query_arg( array(
    'page' => 'slug', // whatever the page slug should be, either for this page or the other pages
), admin_url( 'options-general.php' ) );

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)