to:

tep_db_query("insert into " . TABLE_PRODUCTS . " (products_quantity, products_model,products_image, products_price, products_date_added, products_date_available, products_weight, products_status, products_tax_class_id, manufacturers_id) values ('" . tep_db_input($product['products_quantity']) . "', '" . tep_db_input($product['products_model']) . "', '" . tep_db_input($product['products_image']) . "', '" . tep_db_input($product['products_price']) . "', now(), " . (empty($product['products_date_available']) ? "null" : "'" . tep_db_input($product['products_date_available']) . "'") . ", '" . tep_db_input($product['products_weight']) . "', '0', '" . (int)$product['products_tax_class_id'] . "', '" . (int)$product['manufacturers_id'] . "')");

The following SQL queries need to be performed:

ALTER TABLE whos_online MODIFY COLUMN last_page_url VARCHAR(255) NOT NULL;

ALTER TABLE customers MODIFY COLUMN customers_default_address_id INTEGER;

ALTER TABLE customers_basket MODIFY COLUMN final_price DECIMAL(15,4);