function lr_approve_ad_sale($approved, $id) {
    global $wpdb, $current_user;

    $purchase = $wpdb->get_row("SELECT * FROM lr_ad_purchases WHERE id = " . $id . " AND seller = " . $current_user->ID);

    if($approved) {
        $wpdb->query("UPDATE lr_ad_purchases SET datetime = " . date('u') . ", status = 2 WHERE id = " . $id . " AND seller = " . $current_user->ID);

        $site = $wpdb->get_row("SELECT * FROM lr_site_data WHERE id = " . $purchase->site_id . " AND owner_id = " . $purchase->seller);
        $ad   = $wpdb->get_row("SELECT * FROM lr_ads WHERE id = " . $purchase->ad_id . " AND owner_id = " . $purchase->buyer . " AND site_id = " . $site->id);

        $meh = array (
            'headers'   => null,
            'body'      => array(
                'hash'  => md5($site->serial . $ad->type . $ad->title . $ad->url . $purchase->block_id)
            )
        );

        wp_remote_post($site->url, $meh);
    }
    else {
        if($purchase) {
            if($wpdb->query("DELETE FROM lr_ad_purchases WHERE id = " . $id . " AND seller = " . $current_user->ID)) {
                $wpdb->query("UPDATE lr_user_data SET credits = credits + " . $purchase->cost . " WHERE user_id = " . $purchase->buyer);
            }
        }
    }
}