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Getting a Fatal error: Call to a member function


jaycuz123

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I am having a problem with New York Ziptax mod. I followed the instructions and I keep getting this error on my page. The only mod I have is the googlecheckout.

 

Thanks for the help

 

Fatal error: Call to a member function on a non-object in

includes/classes/shopping_cart.php on line 279

 

 

Here is the code that seems to be giving me a problem

 

function calculate() {
 global $customer_id, $sendto, $ship_zip;

 $this->total = 0;
 $this->weight = 0;
 if (!is_array($this->contents)) return 0;

// get delivery postcode
 if (tep_session_is_registered('customer_id')) {
   $address_query = tep_db_query("select entry_postcode from " . TABLE_ADDRESS_BOOK . " where customers_id = '" . (int)$customer_id . "' and address_book_id = '" . (int)$sendto . "'");
   $address = tep_db_fetch_array($address_query);
   $ship_zip = $address['entry_postcode'];
 }

 reset($this->contents);
 while (list($products_id, ) = each($this->contents)) {
   $qty = $this->contents[$products_id]['qty'];

// products price
   $product_query = tep_db_query("select products_id, products_price, products_tax_class_id, products_weight from " . TABLE_PRODUCTS . " where products_id = '" . (int)$products_id . "'");
   if ($product = tep_db_fetch_array($product_query)) {
	 $prid = $product['products_id'];
	 $products_tax = tep_get_tax_rate($product['products_tax_class_id'], -1, $ship_zip);
	  $products_price = $product['products_price'];
	  $products_weight = $product['products_weight'];

	  $specials_query = tep_db_query("select specials_new_products_price from " . TABLE_SPECIALS . " where products_id = '" . (int)$prid . "' and status = '1'");
	  if (tep_db_num_rows ($specials_query)) {
		$specials = tep_db_fetch_array($specials_query);
		$products_price = $specials['specials_new_products_price'];
	  }
	 // This is line 279 that is giving me the Call to a member function on a non-object 
	  $this->total += $currencies->calculate_price($products_price, $products_tax, $qty);
	  $this->weight += ($qty * $products_weight);
	}

 

 

 

 

Here is the code for the whole shopping cart

 

 

<?php
/*
 $Id: shopping_cart.php,v 1.35 2003/06/25 21:14:33 hpdl Exp $

 osCommerce, Open Source E-Commerce Solutions
 http://www.oscommerce.com

 Copyright (c) 2003 osCommerce

 Released under the GNU General Public License
*/

 class shoppingCart {
var $contents, $total, $weight, $cartID, $content_type;

function shoppingCart() {
  $this->reset();
}

function restore_contents() {
  global $customer_id;

  if (!tep_session_is_registered('customer_id')) return false;

// insert current cart contents in database
  if (is_array($this->contents)) {
	reset($this->contents);
	while (list($products_id, ) = each($this->contents)) {
	  $qty = $this->contents[$products_id]['qty'];
	  $product_query = tep_db_query("select products_id from " . TABLE_CUSTOMERS_BASKET . " where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products_id) . "'");
	  if (!tep_db_num_rows($product_query)) {
		tep_db_query("insert into " . TABLE_CUSTOMERS_BASKET . " (customers_id, products_id, customers_basket_quantity, customers_basket_date_added) values ('" . (int)$customer_id . "', '" . tep_db_input($products_id) . "', '" . tep_db_input($qty) . "', '" . date('Ymd') . "')");
		if (isset($this->contents[$products_id]['attributes'])) {
		  reset($this->contents[$products_id]['attributes']);
		  while (list($option, $value) = each($this->contents[$products_id]['attributes'])) {
			tep_db_query("insert into " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " (customers_id, products_id, products_options_id, products_options_value_id) values ('" . (int)$customer_id . "', '" . tep_db_input($products_id) . "', '" . (int)$option . "', '" . (int)$value . "')");
		  }
		}
	  } else {
		tep_db_query("update " . TABLE_CUSTOMERS_BASKET . " set customers_basket_quantity = '" . tep_db_input($qty) . "' where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products_id) . "'");
	  }
	}
  }

// reset per-session cart contents, but not the database contents
  $this->reset(false);

  $products_query = tep_db_query("select products_id, customers_basket_quantity from " . TABLE_CUSTOMERS_BASKET . " where customers_id = '" . (int)$customer_id . "'");
  while ($products = tep_db_fetch_array($products_query)) {
	$this->contents[$products['products_id']] = array('qty' => $products['customers_basket_quantity']);
// attributes
	$attributes_query = tep_db_query("select products_options_id, products_options_value_id from " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products['products_id']) . "'");
	while ($attributes = tep_db_fetch_array($attributes_query)) {
	  $this->contents[$products['products_id']]['attributes'][$attributes['products_options_id']] = $attributes['products_options_value_id'];
	}
  }

  $this->cleanup();
}

function reset($reset_database = false) {
  global $customer_id;

  $this->contents = array();
  $this->total = 0;
  $this->weight = 0;
  $this->content_type = false;

  if (tep_session_is_registered('customer_id') && ($reset_database == true)) {
	tep_db_query("delete from " . TABLE_CUSTOMERS_BASKET . " where customers_id = '" . (int)$customer_id . "'");
	tep_db_query("delete from " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " where customers_id = '" . (int)$customer_id . "'");
  }

  unset($this->cartID);
  if (tep_session_is_registered('cartID')) tep_session_unregister('cartID');
}

function add_cart($products_id, $qty = '1', $attributes = '', $notify = true) {
  global $new_products_id_in_cart, $customer_id;

  $products_id_string = tep_get_uprid($products_id, $attributes);
  $products_id = tep_get_prid($products_id_string);

  if (defined('MAX_QTY_IN_CART') && (MAX_QTY_IN_CART > 0) && ((int)$qty > MAX_QTY_IN_CART)) {
	$qty = MAX_QTY_IN_CART;
  }

  $attributes_pass_check = true;

  if (is_array($attributes)) {
	reset($attributes);
	while (list($option, $value) = each($attributes)) {
	  if (!is_numeric($option) || !is_numeric($value)) {
		$attributes_pass_check = false;
		break;
	  }
	}
  }

  if (is_numeric($products_id) && is_numeric($qty) && ($attributes_pass_check == true)) {
	$check_product_query = tep_db_query("select products_status from " . TABLE_PRODUCTS . " where products_id = '" . (int)$products_id . "'");
	$check_product = tep_db_fetch_array($check_product_query);

	if (($check_product !== false) && ($check_product['products_status'] == '1')) {
	  if ($notify == true) {
		$new_products_id_in_cart = $products_id;
		tep_session_register('new_products_id_in_cart');
	  }

	  if ($this->in_cart($products_id_string)) {
		$this->update_quantity($products_id_string, $qty, $attributes);
	  } else {
		$this->contents[$products_id_string] = array('qty' => (int)$qty);
// insert into database
		if (tep_session_is_registered('customer_id')) tep_db_query("insert into " . TABLE_CUSTOMERS_BASKET . " (customers_id, products_id, customers_basket_quantity, customers_basket_date_added) values ('" . (int)$customer_id . "', '" . tep_db_input($products_id_string) . "', '" . (int)$qty . "', '" . date('Ymd') . "')");

		if (is_array($attributes)) {
		  reset($attributes);
		  while (list($option, $value) = each($attributes)) {
			$this->contents[$products_id_string]['attributes'][$option] = $value;
// insert into database
			if (tep_session_is_registered('customer_id')) tep_db_query("insert into " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " (customers_id, products_id, products_options_id, products_options_value_id) values ('" . (int)$customer_id . "', '" . tep_db_input($products_id_string) . "', '" . (int)$option . "', '" . (int)$value . "')");
		  }
		}
	  }

	  $this->cleanup();

// assign a temporary unique ID to the order contents to prevent hack attempts during the checkout procedure
	  $this->cartID = $this->generate_cart_id();
	}
  }
}

function update_quantity($products_id, $quantity = '', $attributes = '') {
  global $customer_id;

  $products_id_string = tep_get_uprid($products_id, $attributes);
  $products_id = tep_get_prid($products_id_string);

  if (defined('MAX_QTY_IN_CART') && (MAX_QTY_IN_CART > 0) && ((int)$quantity > MAX_QTY_IN_CART)) {
	$quantity = MAX_QTY_IN_CART;
  }

  $attributes_pass_check = true;

  if (is_array($attributes)) {
	reset($attributes);
	while (list($option, $value) = each($attributes)) {
	  if (!is_numeric($option) || !is_numeric($value)) {
		$attributes_pass_check = false;
		break;
	  }
	}
  }

  if (is_numeric($products_id) && isset($this->contents[$products_id_string]) && is_numeric($quantity) && ($attributes_pass_check == true)) {
	$this->contents[$products_id_string] = array('qty' => (int)$quantity);
// update database
	if (tep_session_is_registered('customer_id')) tep_db_query("update " . TABLE_CUSTOMERS_BASKET . " set customers_basket_quantity = '" . (int)$quantity . "' where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products_id_string) . "'");

	if (is_array($attributes)) {
	  reset($attributes);
	  while (list($option, $value) = each($attributes)) {
		$this->contents[$products_id_string]['attributes'][$option] = $value;
// update database
		if (tep_session_is_registered('customer_id')) tep_db_query("update " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " set products_options_value_id = '" . (int)$value . "' where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products_id_string) . "' and products_options_id = '" . (int)$option . "'");
	  }
	}
  }
}

function cleanup() {
  global $customer_id;

  reset($this->contents);
  while (list($key,) = each($this->contents)) {
	if ($this->contents[$key]['qty'] < 1) {
	  unset($this->contents[$key]);
// remove from database
	  if (tep_session_is_registered('customer_id')) {
		tep_db_query("delete from " . TABLE_CUSTOMERS_BASKET . " where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($key) . "'");
		tep_db_query("delete from " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($key) . "'");
	  }
	}
  }
}

function count_contents() {  // get total number of items in cart 
  $total_items = 0;
  if (is_array($this->contents)) {
	reset($this->contents);
	while (list($products_id, ) = each($this->contents)) {
	  $total_items += $this->get_quantity($products_id);
	}
  }

  return $total_items;
}

function get_quantity($products_id) {
  if (isset($this->contents[$products_id])) {
	return $this->contents[$products_id]['qty'];
  } else {
	return 0;
  }
}

function in_cart($products_id) {
  if (isset($this->contents[$products_id])) {
	return true;
  } else {
	return false;
  }
}

function remove($products_id) {
  global $customer_id;

  unset($this->contents[$products_id]);
// remove from database
  if (tep_session_is_registered('customer_id')) {
	tep_db_query("delete from " . TABLE_CUSTOMERS_BASKET . " where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products_id) . "'");
	tep_db_query("delete from " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products_id) . "'");
  }

// assign a temporary unique ID to the order contents to prevent hack attempts during the checkout procedure
  $this->cartID = $this->generate_cart_id();
}

function remove_all() {
  $this->reset();
}

function get_product_id_list() {
  $product_id_list = '';
  if (is_array($this->contents)) {
	reset($this->contents);
	while (list($products_id, ) = each($this->contents)) {
	  $product_id_list .= ', ' . $products_id;
	}
  }

  return substr($product_id_list, 2);
}

function calculate() {
 global $customer_id, $sendto, $ship_zip;

 $this->total = 0;
 $this->weight = 0;
 if (!is_array($this->contents)) return 0;

// get delivery postcode
 if (tep_session_is_registered('customer_id')) {
   $address_query = tep_db_query("select entry_postcode from " . TABLE_ADDRESS_BOOK . " where customers_id = '" . (int)$customer_id . "' and address_book_id = '" . (int)$sendto . "'");
   $address = tep_db_fetch_array($address_query);
   $ship_zip = $address['entry_postcode'];
 }

 reset($this->contents);
 while (list($products_id, ) = each($this->contents)) {
   $qty = $this->contents[$products_id]['qty'];

// products price
   $product_query = tep_db_query("select products_id, products_price, products_tax_class_id, products_weight from " . TABLE_PRODUCTS . " where products_id = '" . (int)$products_id . "'");
   if ($product = tep_db_fetch_array($product_query)) {
	 $prid = $product['products_id'];
	 $products_tax = tep_get_tax_rate($product['products_tax_class_id'], -1, $ship_zip);
	  $products_price = $product['products_price'];
	  $products_weight = $product['products_weight'];

	  $specials_query = tep_db_query("select specials_new_products_price from " . TABLE_SPECIALS . " where products_id = '" . (int)$prid . "' and status = '1'");
	  if (tep_db_num_rows ($specials_query)) {
		$specials = tep_db_fetch_array($specials_query);
		$products_price = $specials['specials_new_products_price'];
	  }

	  $this->total += $currencies->calculate_price($products_price, $products_tax, $qty);
	  $this->weight += ($qty * $products_weight);
	}

// attributes price
	if (isset($this->contents[$products_id]['attributes'])) {
	  reset($this->contents[$products_id]['attributes']);
	  while (list($option, $value) = each($this->contents[$products_id]['attributes'])) {
		$attribute_price_query = tep_db_query("select options_values_price, price_prefix from " . TABLE_PRODUCTS_ATTRIBUTES . " where products_id = '" . (int)$prid . "' and options_id = '" . (int)$option . "' and options_values_id = '" . (int)$value . "'");
		$attribute_price = tep_db_fetch_array($attribute_price_query);
		if ($attribute_price['price_prefix'] == '+') {
		  $this->total += $currencies->calculate_price($attribute_price['options_values_price'], $products_tax, $qty);
		} else {
		  $this->total -= $currencies->calculate_price($attribute_price['options_values_price'], $products_tax, $qty);
		}
	  }
	}
  }
}

function attributes_price($products_id) {
  $attributes_price = 0;

  if (isset($this->contents[$products_id]['attributes'])) {
	reset($this->contents[$products_id]['attributes']);
	while (list($option, $value) = each($this->contents[$products_id]['attributes'])) {
	  $attribute_price_query = tep_db_query("select options_values_price, price_prefix from " . TABLE_PRODUCTS_ATTRIBUTES . " where products_id = '" . (int)$products_id . "' and options_id = '" . (int)$option . "' and options_values_id = '" . (int)$value . "'");
	  $attribute_price = tep_db_fetch_array($attribute_price_query);
	  if ($attribute_price['price_prefix'] == '+') {
		$attributes_price += $attribute_price['options_values_price'];
	  } else {
		$attributes_price -= $attribute_price['options_values_price'];
	  }
	}
  }

  return $attributes_price;
}

function get_products() {
  global $languages_id;

  if (!is_array($this->contents)) return false;

  $products_array = array();
  reset($this->contents);
  while (list($products_id, ) = each($this->contents)) {
	$products_query = tep_db_query("select p.products_id, pd.products_name, p.products_model, p.products_image, p.products_price, p.products_weight, p.products_tax_class_id from " . TABLE_PRODUCTS . " p, " . TABLE_PRODUCTS_DESCRIPTION . " pd where p.products_id = '" . (int)$products_id . "' and pd.products_id = p.products_id and pd.language_id = '" . (int)$languages_id . "'");
	if ($products = tep_db_fetch_array($products_query)) {
	  $prid = $products['products_id'];
	  $products_price = $products['products_price'];

	  $specials_query = tep_db_query("select specials_new_products_price from " . TABLE_SPECIALS . " where products_id = '" . (int)$prid . "' and status = '1'");
	  if (tep_db_num_rows($specials_query)) {
		$specials = tep_db_fetch_array($specials_query);
		$products_price = $specials['specials_new_products_price'];
	  }

	  $products_array[] = array('id' => $products_id,
								'name' => $products['products_name'],
								'model' => $products['products_model'],
								'image' => $products['products_image'],
								'price' => $products_price,
								'quantity' => $this->contents[$products_id]['qty'],
								'weight' => $products['products_weight'],
								'final_price' => ($products_price + $this->attributes_price($products_id)),
								'tax_class_id' => $products['products_tax_class_id'],
								'attributes' => (isset($this->contents[$products_id]['attributes']) ? $this->contents[$products_id]['attributes'] : ''));
	}
  }

  return $products_array;
}

function show_total() {
  $this->calculate();

  return $this->total;
}

function show_weight() {
  $this->calculate();

  return $this->weight;
}

function generate_cart_id($length = 5) {
  return tep_create_random_value($length, 'digits');
}

function get_content_type() {
  $this->content_type = false;

  if ( (DOWNLOAD_ENABLED == 'true') && ($this->count_contents() > 0) ) {
	reset($this->contents);
	while (list($products_id, ) = each($this->contents)) {
	  if (isset($this->contents[$products_id]['attributes'])) {
		reset($this->contents[$products_id]['attributes']);
		while (list(, $value) = each($this->contents[$products_id]['attributes'])) {
		  $virtual_check_query = tep_db_query("select count(*) as total from " . TABLE_PRODUCTS_ATTRIBUTES . " pa, " . TABLE_PRODUCTS_ATTRIBUTES_DOWNLOAD . " pad where pa.products_id = '" . (int)$products_id . "' and pa.options_values_id = '" . (int)$value . "' and pa.products_attributes_id = pad.products_attributes_id");
		  $virtual_check = tep_db_fetch_array($virtual_check_query);

		  if ($virtual_check['total'] > 0) {
			switch ($this->content_type) {
			  case 'physical':
				$this->content_type = 'mixed';

				return $this->content_type;
				break;
			  default:
				$this->content_type = 'virtual';
				break;
			}
		  } else {
			switch ($this->content_type) {
			  case 'virtual':
				$this->content_type = 'mixed';

				return $this->content_type;
				break;
			  default:
				$this->content_type = 'physical';
				break;
			}
		  }
		}
	  } else {
		switch ($this->content_type) {
		  case 'virtual':
			$this->content_type = 'mixed';

			return $this->content_type;
			break;
		  default:
			$this->content_type = 'physical';
			break;
		}
	  }
	}
  } else {
	$this->content_type = 'physical';
  }

  return $this->content_type;
}

function unserialize($broken) {
  for(reset($broken);$kv=each($broken);) {
	$key=$kv['key'];
	if (gettype($this->$key)!="user function")
	$this->$key=$kv['value'];
  }
}

 }
?>

 

Thank you very much to anyone that could help me.

 

Jay

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  • 5 weeks later...

Hey, i had the same problem. I fixed it by making a change. The currencies variable has to be defined earlier in the code.

 

Find this code below

function calculate() {
    global $customer_id, $sendto, $ship_zip;

 

Change it to

 

   function calculate() {
    global $currencies, $customer_id, $sendto, $ship_zip;

 

That worked perfectly for me.

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