append url parameters to all links
1. Track Affiliate via Cookie To track the affiliate source you can use a Cookie for internal tracking. In that case you only need to modify external links. add_action( ‘plugins_loaded’, ‘so265278_affiliate_check’ ); function so265278_affiliate_check() { $is_affiliate = ! empty( $_GET[‘ref’] ); if ( $is_affiliate ) { setcookie( ‘affiliate’, $_GET[‘ref’], MONTH_IN_SECONDS ); } } Now you … Read more