shopping_cart.php

Easy_Buy是一个在线销售系统

  function show_weight() {
    $this->calculate();
    return $this->weight;
  }
  /**
   * Method to generate a cart ID
   *
   * @param length of ID to generate
   * @return string cart ID
   */
  function generate_cart_id($length = 5) {
    return zen_create_random_value($length, 'digits');
  }
  /**
   * Method to calculate the content type of a cart
   *
   * @param boolean whether to test for Gift Vouchers only
   * @return string
   */
  function get_content_type($gv_only = 'false') {
    global $db;

    $this->content_type = false;
    $gift_voucher = 0;

    //      if ( (DOWNLOAD_ENABLED == 'true') && ($this->count_contents() > 0) ) {
    if ( $this->count_contents() > 0 ) {
      reset($this->contents);
      while (list($products_id, ) = each($this->contents)) {
        $free_ship_check = $db->Execute("select products_virtual, products_model, products_price, product_is_always_free_shipping from " . TABLE_PRODUCTS . " where products_id = '" . zen_get_prid($products_id) . "'");
        $virtual_check = false;
        if (ereg('^GIFT', addslashes($free_ship_check->fields['products_model']))) {
          $gift_voucher += ($free_ship_check->fields['products_price'] + $this->attributes_price($products_id)) * $this->contents[$products_id]['qty'];
        }
        // product_is_always_free_shipping = 2 is special requires shipping
        // Example: Product with download
        if (isset($this->contents[$products_id]['attributes']) and $free_ship_check->fields['product_is_always_free_shipping'] != 2) {
          reset($this->contents[$products_id]['attributes']);
          while (list(, $value) = each($this->contents[$products_id]['attributes'])) {
            $virtual_check_query = "select count(*) as total
                                      from " . TABLE_PRODUCTS_ATTRIBUTES . " pa, "
            . TABLE_PRODUCTS_ATTRIBUTES_DOWNLOAD . " pad
                                      where pa.products_id = '" . (int)$products_id . "'
                                      and pa.options_values_id = '" . (int)$value . "'
                                      and pa.products_attributes_id = pad.products_attributes_id";

            $virtual_check = $db->Execute($virtual_check_query);

            if ($virtual_check->fields['total'] > 0) {
              switch ($this->content_type) {
                case 'physical':
                $this->content_type = 'mixed';
                if ($gv_only == 'true') {
                  return $gift_voucher;
                } else {
                  return $this->content_type;
                }
                break;
                default:
                $this->content_type = 'virtual';
                break;
              }
            } else {
              switch ($this->content_type) {
                case 'virtual':
                if ($free_ship_check->fields['products_virtual'] == '1') {
                  $this->content_type = 'virtual';
                } else {
                  $this->content_type = 'mixed';
                  if ($gv_only == 'true') {
                    return $gift_voucher;
                  } else {
                    return $this->content_type;
                  }
                }
                break;
                case 'physical':
                if ($free_ship_check->fields['products_virtual'] == '1') {
                  $this->content_type = 'mixed';
                  if ($gv_only == 'true') {
                    return $gift_voucher;
                  } else {
                    return $this->content_type;
                  }
                } else {
                  $this->content_type = 'physical';
                }
                break;
                default:
                if ($free_ship_check->fields['products_virtual'] == '1') {
                  $this->content_type = 'virtual';
                } else {
                  $this->content_type = 'physical';
                }
              }
            }
          }
        } else {
          switch ($this->content_type) {
            case 'virtual':
            if ($free_ship_check->fields['products_virtual'] == '1') {
              $this->content_type = 'virtual';
            } else {
              $this->content_type = 'mixed';
              if ($gv_only == 'true') {
                return $gift_voucher;
              } else {
                return $this->content_type;
              }
            }
            break;
            case 'physical':
            if ($free_ship_check->fields['products_virtual'] == '1') {
              $this->content_type = 'mixed';
              if ($gv_only == 'true') {
                return $gift_voucher;
              } else {
                return $this->content_type;
              }
            } else {
              $this->content_type = 'physical';
            }
            break;
            default:
            if ($free_ship_check->fields['products_virtual'] == '1') {
              $this->content_type = 'virtual';
            } else {
              $this->content_type = 'physical';
            }
          }
        }
      }
    } else {
      $this->content_type = 'physical';
    }

    if ($gv_only == 'true') {
      return $gift_voucher;
    } else {
      return $this->content_type;
    }
  }
  /**
   * Method to unserialize a cart object
   *
   * @deprecated
   * @private
   */
  function unserialize($broken) {
    for(reset($broken);$kv=each($broken);) {
      $key=$kv['key'];
      if (gettype($this->$key)!="user function")
      $this->$key=$kv['value'];
    }
  }
  /**
   * Method to calculate item quantity, bounded the mixed/min units settings
   *
   * @param boolean product id of item to check
   * @return deciaml
   */
  function in_cart_mixed($products_id) {
    global $db;
    // if nothing is in cart return 0
    if (!is_array($this->contents)) return 0;

    // check if mixed is on
    //      $product = $db->Execute("select products_id, products_quantity_mixed from " . TABLE_PRODUCTS . " where products_id='" . (int)$products_id . "' limit 1");
    $product = $db->Execute("select products_id, products_quantity_mixed from " . TABLE_PRODUCTS . " where products_id='" . zen_get_prid($products_id) . "' limit 1");

    // if mixed attributes is off return qty for current attribute selection
    if ($product->fields['products_quantity_mixed'] == '0') {
      return $this->get_quantity($products_id);
    }

    // compute total quantity regardless of attributes
    $in_cart_mixed_qty = 0;
    $chk_products_id= zen_get_prid($products_id);

    // reset($this->contents); // breaks cart
    $check_contents = $this->contents;
    while (list($products_id, ) = each($check_contents)) {
      $test_id = zen_get_prid($products_id);
      if ($test_id == $chk_products_id) {
        $in_cart_mixed_qty += $check_contents[$products_id]['qty'];
      }
    }
    return $in_cart_mixed_qty;
  }
  /**
   * Method to calculate item quantity, bounded the mixed/min units settings
   *
   * @param boolean product id of item to check
   * @return deciaml
   */
  function in_cart_mixed_discount_quantity($products_id) {
    global $db;
    // if nothing is in cart return 0
    if (!is_array($this->contents)) return 0;

    // check if mixed is on
    //      $product = $db->Execute("select products_id, products_mixed_discount_quantity from " . TABLE_PRODUCTS . " where products_id='" . (int)$products_id . "' limit 1");
    $product = $db->Execute("select products_id, products_mixed_discount_quantity from " . TABLE_PRODUCTS . " where products_id='" . zen_get_prid($products_id) . "' limit 1");

    // if mixed attributes is off return qty for current attribute selection
    if ($product->fields['products_mixed_discount_quantity'] == '0') {
      return $this->get_quantity($products_id);
    }

    // compute total quantity regardless of attributes
    $in_cart_mixed_qty_discount_quantity = 0;
    $chk_products_id= zen_get_prid($products_id);

    // reset($this->contents); // breaks cart
    $check_contents = $this->contents;
    while (list($products_id, ) = each($check_contents)) {
      $test_id = zen_get_prid($products_id);
      if ($test_id == $chk_products_id) {
        $in_cart_mixed_qty_discount_quantity += $check_contents[$products_id]['qty'];
      }
    }
    return $in_cart_mixed_qty_discount_quantity;
  }
  /**
   * Method to calculate the number of items in a cart based on an abitrary property
   *
   * $check_what is the fieldname example: 'products_is_free'
   * $check_value is the value being tested for - default is 1
   * Syntax: $_SESSION['cart']->in_cart_check('product_is_free','1');
   *
   * @param string product field to check
   * @param mixed value to check for
   * @return integer number of items matching restraint
   */
  function in_cart_check($check_what, $check_value='1') {
    global $db;
    // if nothing is in cart return 0
    if (!is_array($this->contents)) return 0;

    // compute total quantity for field
    $in_cart_check_qty=0;

    reset($this->contents);
    while (list($products_id, ) = each($this->contents)) {
      $testing_id = zen_get_prid($products_id);
      // check if field it true
      $product_check = $db->Execute("select " . $check_what . " as check_it from " . TABLE_PRODUCTS . " where products_id='" . $testing_id . "' limit 1");
      if ($product_check->fields['check_it'] == $check_value) {
        $in_cart_check_qty += $this->contents[$products_id]['qty'];
      }
    }
    return $in_cart_check_qty;
  }
  /**
   * Method to check whether cart contains only Gift Vouchers
   *
   * @return mixed value of Gift Vouchers in cart
   */
  function gv_only() {
    $gift_voucher = $this->get_content_type(true);
    return $gift_voucher;
  }
  /**
   * Method to return the number of free shipping items in the cart
   *
   * @return decimal
   */
  function free_shipping_items() {
    $this->calculate();
    return $this->free_shipping_item;
  }
  /**
   * Method to return the total price of free shipping items in the cart
   *
   * @return decimal
   */
  function free_shipping_prices() {
    $this->calculate();

    return $this->free_shipping_price;
  }
  /**
   * Method to return the total weight of free shipping items in the cart
   *
   * @return decimal
   */
  function free_shipping_weight() {
    $this->calculate();

    return $this->free_shipping_weight;
  }
  /**
   * Method to handle cart Action - update product
   *
   * @param string forward destination
   * @param url parameters