shopping_cart.php

Easy_Buy是一个在线销售系统

        $_SESSION['cart_errors'] .= zen_get_products_name($attribute_price->fields['products_id'], $_SESSION['languages_id'])  . ERROR_PRODUCT_OPTION_SELECTION . '<br />';
        }
        */
      }
    }

    return $attributes_price;
  }
  /**
   * Method to calculate one time price of attributes for a given item
   *
   * @param mixed the product ID of the item to check
   * @param decimal item quantity
   * @return decimal the pice of the items attributes
   * @global object access to the db object
   */
  function attributes_price_onetime_charges($products_id, $qty) {
    global $db;

    $attributes_price_onetime = 0;

    if (isset($this->contents[$products_id]['attributes'])) {

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

        $attribute_price_query = "select *
                                    from " . TABLE_PRODUCTS_ATTRIBUTES . "
                                    where products_id = '" . (int)$products_id . "'
                                    and options_id = '" . (int)$option . "'
                                    and options_values_id = '" . (int)$value . "'";

        $attribute_price = $db->Execute($attribute_price_query);

        $new_attributes_price = 0;
        $discount_type_id = '';
        $sale_maker_discount = '';

        //          if ($attribute_price->fields['product_attribute_is_free']) {
        if ($attribute_price->fields['product_attribute_is_free'] == '1' and zen_get_products_price_is_free((int)$products_id)) {
          // no charge
        } else {
          $discount_type_id = '';
          $sale_maker_discount = '';
          $new_attributes_price = zen_get_discount_calc($products_id, $attribute_price->fields['products_attributes_id'], $attribute_price->fields['options_values_price'], $qty);

          //////////////////////////////////////////////////
          // calculate additional one time charges
          //// one time charges
          // attributes_price_onetime
          if ($attribute_price->fields['attributes_price_onetime'] > 0) {
            if ((int)$products_id != $products_id) {
              die('I DO NOT MATCH ' . $products_id);
            }
            $attributes_price_onetime += $attribute_price->fields['attributes_price_onetime'];
          }
          // attributes_price_factor_onetime
          $added_charge = 0;
          if ($attribute_price->fields['attributes_price_factor_onetime'] > 0) {
            $chk_price = zen_get_products_base_price($products_id);
            $chk_special = zen_get_products_special_price($products_id, false);
            $added_charge = zen_get_attributes_price_factor($chk_price, $chk_special, $attribute_price->fields['attributes_price_factor_onetime'], $attribute_price->fields['attributes_price_factor_onetime_offset']);

            $attributes_price_onetime += $added_charge;
          }
          // attributes_qty_prices_onetime
          $added_charge = 0;
          if ($attribute_price->fields['attributes_qty_prices_onetime'] != '') {
            $chk_price = zen_get_products_base_price($products_id);
            $chk_special = zen_get_products_special_price($products_id, false);
            $added_charge = zen_get_attributes_qty_prices_onetime($attribute_price->fields['attributes_qty_prices_onetime'], $qty);
            $attributes_price_onetime += $added_charge;
          }

          //////////////////////////////////////////////////
        }
      }
    }

    return $attributes_price_onetime;
  }
  /**
   * Method to calculate weight of attributes for a given item
   *
   * @param mixed the product ID of the item to check
   * @return decimal the weight of the items attributes
   */
  function attributes_weight($products_id) {
    global $db;

    $attribute_weight = 0;

    if (isset($this->contents[$products_id]['attributes'])) {
      reset($this->contents[$products_id]['attributes']);
      while (list($option, $value) = each($this->contents[$products_id]['attributes'])) {
        $attribute_weight_query = "select products_attributes_weight, products_attributes_weight_prefix
                                    from " . TABLE_PRODUCTS_ATTRIBUTES . "
                                    where products_id = '" . (int)$products_id . "'
                                    and options_id = '" . (int)$option . "'
                                    and options_values_id = '" . (int)$value . "'";

        $attribute_weight_info = $db->Execute($attribute_weight_query);

        // adjusted count for free shipping
        $product = $db->Execute("select products_id, product_is_always_free_shipping
                          from " . TABLE_PRODUCTS . "
                          where products_id = '" . (int)$products_id . "'");

        if ($product->fields['product_is_always_free_shipping'] != 1) {
          $new_attributes_weight = $attribute_weight_info->fields['products_attributes_weight'];
        } else {
          $new_attributes_weight = 0;
        }

        // + or blank adds
        if ($attribute_weight_info->fields['products_attributes_weight_prefix'] == '-') {
          $attribute_weight -= $new_attributes_weight;
        } else {
          $attribute_weight += $attribute_weight_info->fields['products_attributes_weight'];
        }
      }
    }

    return $attribute_weight;
  }
  /**
   * Method to return details of all products in the cart
   *
   * @param boolean whether to check if cart contents are valid
   * @return array
   */
  function get_products($check_for_valid_cart = false) {
    global $db;

    $this->notify('NOTIFIER_CART_GET_PRODUCTS_START');

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

    $products_array = array();
    reset($this->contents);
    while (list($products_id, ) = each($this->contents)) {
      $products_query = "select p.products_id, p.products_status, pd.products_name, p.products_model, p.products_image,
                                  p.products_price, p.products_weight, p.products_tax_class_id,
                                  p.products_quantity_order_min, p.products_quantity_order_units,
                                  p.product_is_free, p.products_priced_by_attribute,
                                  p.products_discount_type, p.products_discount_type_from
                           from " . TABLE_PRODUCTS . " p, " . TABLE_PRODUCTS_DESCRIPTION . " pd
                           where p.products_id = '" . (int)$products_id . "'
                           and pd.products_id = p.products_id
                           and pd.language_id = '" . (int)$_SESSION['languages_id'] . "'";

      if ($products = $db->Execute($products_query)) {

        $prid = $products->fields['products_id'];
        $products_price = $products->fields['products_price'];
        //fix here
        /*
        $special_price = zen_get_products_special_price($prid);
        if ($special_price) {
        $products_price = $special_price;
        }
        */
        $special_price = zen_get_products_special_price($prid);
        if ($special_price and $products->fields['products_priced_by_attribute'] == 0) {
          $products_price = $special_price;
        } else {
          $special_price = 0;
        }

        if (zen_get_products_price_is_free($products->fields['products_id'])) {
          // no charge
          $products_price = 0;
        }

        // adjust price for discounts when priced by attribute
        if ($products->fields['products_priced_by_attribute'] == '1' and zen_has_product_attributes($products->fields['products_id'], 'false')) {
          // reset for priced by attributes
          //            $products_price = $products->fields['products_price'];
          if ($special_price) {
            $products_price = $special_price;
          } else {
            $products_price = $products->fields['products_price'];
          }
        } else {
          // discount qty pricing
          if ($products->fields['products_discount_type'] != '0') {
            $products_price = zen_get_products_discount_price_qty($products->fields['products_id'], $this->contents[$products_id]['qty']);
          }
        }

// validate cart contents for checkout
        if ($check_for_valid_cart == true) {
          $fix_once = 0;

          // Check products_status if not already
          $check_status = $products->fields['products_status'];
          if ( $check_status == 0 ) {
            $fix_once ++;
            $_SESSION['valid_to_checkout'] = false;
            $_SESSION['cart_errors'] .= ERROR_PRODUCT . $products->fields['products_name'] . ERROR_PRODUCT_STATUS_SHOPPING_CART . '<br />';
            $this->remove($products_id);
          }

          // check only if valid products_status
          if ($fix_once == 0) {
            $check_quantity = $this->contents[$products_id]['qty'];
            $check_quantity_min = $products->fields['products_quantity_order_min'];
            // Check quantity min
            if ($new_check_quantity = $this->in_cart_mixed($prid) ) {
              $check_quantity = $new_check_quantity;
            }
          }

          if ($fix_once == 0) {
            if ($check_quantity < $check_quantity_min) {
              $fix_once ++;
              $_SESSION['valid_to_checkout'] = false;
              $_SESSION['cart_errors'] .= ERROR_PRODUCT . $products->fields['products_name'] . ERROR_PRODUCT_QUANTITY_MIN_SHOPPING_CART . ERROR_PRODUCT_QUANTITY_ORDERED . $check_quantity  . ' <span class="alertBlack">' . zen_get_products_quantity_min_units_display((int)$prid, false, true) . '</span> ' . '<br />';
            }
          }

          // Check Quantity Units if not already an error on Quantity Minimum
          if ($fix_once == 0) {
            $check_units = $products->fields['products_quantity_order_units'];
            if ( fmod_round($check_quantity,$check_units) != 0 ) {
              $_SESSION['valid_to_checkout'] = false;
              $_SESSION['cart_errors'] .= ERROR_PRODUCT . $products->fields['products_name'] . ERROR_PRODUCT_QUANTITY_UNITS_SHOPPING_CART . ERROR_PRODUCT_QUANTITY_ORDERED . $check_quantity  . ' <span class="alertBlack">' . zen_get_products_quantity_min_units_display((int)$prid, false, true) . '</span> ' . '<br />';
            }
          }

          // Verify Valid Attributes
        }

        //clr 030714 update $products_array to include attribute value_text. This is needed for text attributes.

        // convert quantity to proper decimals
        if (QUANTITY_DECIMALS != 0) {
          //          $new_qty = round($new_qty, QUANTITY_DECIMALS);

          $fix_qty = $this->contents[$products_id]['qty'];
          switch (true) {
            case (!strstr($fix_qty, '.')):
            $new_qty = $fix_qty;
            break;
            default:
            $new_qty = preg_replace('/[0]+$/','',$this->contents[$products_id]['qty']);
            break;
          }
        } else {
          $new_qty = $this->contents[$products_id]['qty'];
        }

        $new_qty = round($new_qty, QUANTITY_DECIMALS);

        if ($new_qty == (int)$new_qty) {
          $new_qty = (int)$new_qty;
        }

        $products_array[] = array('id' => $products_id,
        'name' => $products->fields['products_name'],
        'model' => $products->fields['products_model'],
        'image' => $products->fields['products_image'],
        'price' => ($products->fields['product_is_free'] =='1' ? 0 : $products_price),
        //                                    'quantity' => $this->contents[$products_id]['qty'],
        'quantity' => $new_qty,
        'weight' => $products->fields['products_weight'] + $this->attributes_weight($products_id),
        // fix here
        'final_price' => ($products_price + $this->attributes_price($products_id)),
        'onetime_charges' => ($this->attributes_price_onetime_charges($products_id, $new_qty)),
        'tax_class_id' => $products->fields['products_tax_class_id'],
        'attributes' => (isset($this->contents[$products_id]['attributes']) ? $this->contents[$products_id]['attributes'] : ''),
        'attributes_values' => (isset($this->contents[$products_id]['attributes_values']) ? $this->contents[$products_id]['attributes_values'] : ''),
        'products_priced_by_attribute' => $products->fields['products_priced_by_attribute'],
        'product_is_free' => $products->fields['product_is_free'],
        'products_discount_type' => $products->fields['products_discount_type'],
        'products_discount_type_from' => $products->fields['products_discount_type_from']);
      }
    }
    $this->notify('NOTIFIER_CART_GET_PRODUCTS_END');
    return $products_array;
  }
  /**
   * Method to calculate total price of items in cart
   *
   * @return decimal Total Price
   */
  function show_total() {
    $this->notify('NOTIFIER_CART_SHOW_TOTAL_START');
    $this->calculate();
    $this->notify('NOTIFIER_CART_SHOW_TOTAL_END');
    return $this->total;
  }
  /**
   * Method to calculate total weight of items in cart
   *
   * @return decimal Total Weight
   */