Вызов функции-члена MoveNext () для массива после обновления кода OSCommerce до Zen Cart

У меня есть сегмент кода от OSCommerce, как

while ( $product_array = tep_db_fetch_array($this->products_sql)) {
// do some stuff
}

В дополнение к запросу дополнительной информации полная функция, предшествующая соответствующему коду, показана ниже.

function get_next_product() {
global $Count, $shoppingCart;

if ($Count && ($this->Products >= $Count)) {
return NULL;
}

$product = NULL;
while ($product_array = tep_db_fetch_array($this->products_sql)) {
$GLOBALS['exporter_module']->checkUsedMemory();
$GLOBALS['shoppingCart']->processProductData($product_array);

foreach ($this->values as $valueName => $valuesArr) {
$product_array[$valueName] = $valuesArr[$product_array['products_id']];
}

$product = $product_array;
$product_array['id'] = $product_array['products_id'];
$product['id'] = $product_array['products_id'];
$product['quantity'] = $product_array['products_quantity'];

// get special price
$special_price = $this->getSpecial($product_array);

if (null !== $special_price['price']) {
$product['price'] = $special_price['price'];
$_product['is_special'] = 1;
} else {
$product['price'] = $product_array['products_price'];
$product['is_special'] = 0;
// Include in Base Price, When Priced by Attributes.
if (isset($product['products_priced_by_attribute'])
&& $product['products_priced_by_attribute'] == 1
&& $product['products_price'] == 0
&& $product['products_price_sorter'] != 0)  {

$product['price'] = $product['products_price_sorter'];
$product_array['products_price'] = $product['products_price_sorter'];
}
}
}

На основании найденной информации на дзен корзине вики Я изменил это для Zen Cart на

while (!$product_array->EOF) {
// do some stuff
$product_array->MoveNext();
}

и теперь получить фатальную ошибку: вызов функции-члена MoveNext () в массиве
$ this-> products_sql — это содержимое функции, найденной в другом месте того же файла. Но даже это не настоящий SQL-запрос.

function get_products()
{
$this->products_sql = $this->select_products($this->options['categories'], $this->options['language'], $this->options['quantities'], $this->options['withzero'], $this->options['stockout'], $this->options['sub']);
}

Я подумал, что это поможет, если бы вы знали, что $ this-> products_sql использовало в исходном коде, поэтому var_dump показан ниже.

object(queryFactoryResult)#47 (10) {
["EOF"]=>
bool(false)
["cursor"]=>
int(0)
["fields"]=>
array(49) {
["products_id"]=>
string(1) "1"["products_type"]=>
string(1) "1"["products_quantity"]=>
string(2) "30"["products_model"]=>
string(8) "MG200MMS"["products_image"]=>
string(19) "matrox/mg200mms.gif"["products_price"]=>
string(8) "299.9900"["products_virtual"]=>
string(1) "0"["products_date_added"]=>
string(19) "2003-11-03 12:32:17"["products_last_modified"]=>
string(19) "2004-04-26 23:57:34"["products_date_available"]=>
NULL
["products_weight"]=>
string(2) "23"["products_status"]=>
string(1) "1"["products_tax_class_id"]=>
string(1) "1"["manufacturers_id"]=>
string(1) "1"["products_ordered"]=>
string(1) "2"["products_quantity_order_min"]=>
string(1) "1"["products_quantity_order_units"]=>
string(1) "1"["products_priced_by_attribute"]=>
string(1) "0"["product_is_free"]=>
string(1) "0"["product_is_call"]=>
string(1) "0"["products_quantity_mixed"]=>
string(1) "0"["product_is_always_free_shipping"]=>
string(1) "0"["products_qty_box_status"]=>
string(1) "1"["products_quantity_order_max"]=>
string(1) "0"["products_sort_order"]=>
string(1) "0"["products_discount_type"]=>
string(1) "0"["products_discount_type_from"]=>
string(1) "0"["products_price_sorter"]=>
string(8) "299.9900"["master_categories_id"]=>
string(1) "4"["products_mixed_discount_quantity"]=>
string(1) "1"["metatags_title_status"]=>
string(1) "0"["metatags_products_name_status"]=>
string(1) "0"["metatags_model_status"]=>
string(1) "0"["metatags_price_status"]=>
string(1) "0"["metatags_title_tagline_status"]=>
string(1) "0"["language_id"]=>
string(1) "1"["products_name"]=>
string(15) "Matrox G200 MMS"["products_description"]=>
string(1159) "Reinforcing its position as a multi-monitor trailblazer, Matrox Graphics Inc. has once again developed the most flexible and highly advanced solution in the industry. Introducing the new Matrox G200 Multi-Monitor Series; the first graphics card ever to support up to four DVI digital flat panel displays on a single 8&quot; PCI board.<br /><br />With continuing demand for digital flat panels in the financial workplace, the Matrox G200 MMS is the ultimate in flexible solutions. The Matrox G200 MMS also supports the new digital video interface (DVI) created by the Digital Display Working Group (DDWG) designed to ease the adoption of digital flat panels. Other configurations include composite video capture ability and onboard TV tuner, making the Matrox G200 MMS the complete solution for business needs.<br /><br />Based on the award-winning MGA-G200 graphics chip, the Matrox G200 Multi-Monitor Series provides superior 2D/3D graphics acceleration to meet the demanding needs of business applications such as real-time stock quotes (Versus), live video feeds (Reuters & Bloombergs), multiple windows applications, word processing, spreadsheets and CAD."["products_url"]=>
string(45) "www.matrox.com/mga/products/g200_mms/home.cfm"["products_viewed"]=>
string(1) "1"["categories_id"]=>
string(1) "4"["categories_name"]=>
string(14) "Graphics Cards"["categories_description"]=>
string(0) ""["languages_name"]=>
string(7) "English"["languages_code"]=>
string(2) "en"["manufacturers_name"]=>
string(6) "Matrox"["manufacturers_image"]=>
string(37) "manufacturers/manufacturer_matrox.gif"["date_added"]=>
string(19) "2003-12-23 03:18:19"["last_modified"]=>
NULL
}
["is_cached"]=>
bool(false)
["result"]=>
array(0) {
}
["result_random"]=>
NULL
["limit"]=>
NULL
["resource"]=>
object(mysqli_result)#52 (5) {
["current_field"]=>
int(0)
["field_count"]=>
int(53)
["lengths"]=>
array(53) {
[0]=>
int(1)
[1]=>
int(1)
[2]=>
int(2)
[3]=>
int(8)
[4]=>
int(19)
[5]=>
int(8)
[6]=>
int(1)
[7]=>
int(19)
[8]=>
int(19)
[9]=>
int(0)
[10]=>
int(2)
[11]=>
int(1)
[12]=>
int(1)
[13]=>
int(1)
[14]=>
int(1)
[15]=>
int(1)
[16]=>
int(1)
[17]=>
int(1)
[18]=>
int(1)
[19]=>
int(1)
[20]=>
int(1)
[21]=>
int(1)
[22]=>
int(1)
[23]=>
int(1)
[24]=>
int(1)
[25]=>
int(1)
[26]=>
int(1)
[27]=>
int(8)
[28]=>
int(1)
[29]=>
int(1)
[30]=>
int(1)
[31]=>
int(1)
[32]=>
int(1)
[33]=>
int(1)
[34]=>
int(1)
[35]=>
int(1)
[36]=>
int(1)
[37]=>
int(15)
[38]=>
int(1159)
[39]=>
int(45)
[40]=>
int(1)
[41]=>
int(1)
[42]=>
int(1)
[43]=>
int(14)
[44]=>
int(0)
[45]=>
int(7)
[46]=>
int(2)
[47]=>
int(1)
[48]=>
int(1)
[49]=>
int(6)
[50]=>
int(37)
[51]=>
int(19)
[52]=>
int(0)
}
["num_rows"]=>
int(2)
["type"]=>
int(0)
}
["link"]=>
object(mysqli)#9 (19) {
["affected_rows"]=>
int(2)
["client_info"]=>
string(79) "mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $"["client_version"]=>
int(50011)
["connect_errno"]=>
int(0)
["connect_error"]=>
NULL
["errno"]=>
int(0)
["error"]=>
string(0) ""["error_list"]=>
array(0) {
}
["field_count"]=>
int(11)
["host_info"]=>
string(25) "Localhost via UNIX socket"["info"]=>
NULL
["insert_id"]=>
int(0)
["server_info"]=>
string(6) "5.6.35"["server_version"]=>
int(50635)
["stat"]=>
string(137) "Uptime: 48210  Threads: 6  Questions: 20698  Slow queries: 0  Opens: 114  Flush tables: 1  Open tables: 64  Queries per second avg: 0.429"["sqlstate"]=>
string(5) "00000"["protocol_version"]=>
int(10)
["thread_id"]=>
int(398)
["warning_count"]=>
int(0)
}
["sql_query"]=>
string(693) "SELECT p.*, pd.*, cd.*, l.name as languages_name, l.code as languages_code,pc.categories_id,   m.*  from products p LEFT JOIN products_description pd ON p.products_id = pd.products_id LEFT JOIN products_to_categories pc ON p.products_id=pc.products_id LEFT JOIN categories_description cd ON pc.categories_id=cd.categories_id AND cd.language_id = pd.language_id LEFT JOIN manufacturers m ON p.manufacturers_id=m.manufacturers_id LEFT JOIN languages l on pd.language_id=l.languages_id  WHERE  1  AND pd.language_id IN (1) AND p.products_price > 0  AND pc.categories_id IN (1,4)  AND (p.manufacturers_id IN (0,1,2,3,4,5,6,7,8,9) OR p.manufacturers_id IS NULL)       ORDER BY  p.products_id  ASC  "}