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ZenCart价格输出函数：zen_get_products_display_price()分析
zen_get_products_display_price()函数位于 /includes/functions/functions_prices.php 文件中(大约149行)，主要用于产品价格输出
参数介绍
| 参数 | 作用 |
|---|---|
| products_id | 产品ID |
代码分析
// 0 = normal shopping
// 1 = Login to shop
// 2 = Can browse but no prices
// verify display of prices
switch (true) {
case (CUSTOMERS_APPROVAL == '1' and $_SESSION['customer_id'] == ''):
// customer must be logged in to browse
return '';
break;
case (CUSTOMERS_APPROVAL == '2' and $_SESSION['customer_id'] == ''):
// customer may browse but no prices
return TEXT_LOGIN_FOR_PRICE_PRICE;
break;
case (CUSTOMERS_APPROVAL == '3' and TEXT_LOGIN_FOR_PRICE_PRICE_SHOWROOM != ''):
// customer may browse but no prices
return TEXT_LOGIN_FOR_PRICE_PRICE_SHOWROOM;
break;
case ((CUSTOMERS_APPROVAL_AUTHORIZATION != '0' and CUSTOMERS_APPROVAL_AUTHORIZATION != '3') and $_SESSION['customer_id'] == ''):
// customer must be logged in to browse
return TEXT_AUTHORIZATION_PENDING_PRICE;
break;
case ((CUSTOMERS_APPROVAL_AUTHORIZATION != '0' and CUSTOMERS_APPROVAL_AUTHORIZATION != '3') and $_SESSION['customers_authorization'] > '0'):
// customer must be logged in to browse
return TEXT_AUTHORIZATION_PENDING_PRICE;
break;
default:
// proceed normally
break;
}
用于价格显示的条件
| 条件 | 作用 |
|---|---|
| CUSTOMERS_APPROVAL == '1' $_SESSION['customer_id'] == '' (CUSTOMERS_APPROVAL后台Configuration-->Customer Details-->Customer Shop Status - View Shop and Prices控制 $_SESSION['customer_id'] == '‘标示客户没有登录) |
满足这个条件，网站访问直接进入登陆页，要求登陆 |
| CUSTOMERS_APPROVAL == '2' $_SESSION['customer_id'] == '' |
满足这个条件，可以正常浏览网站，但价格显示为Price Unavailable (TEXT_LOGIN_FOR_PRICE_PRICE位于includes\languages\english.php) |
| CUSTOMERS_APPROVAL == '3' TEXT_LOGIN_FOR_PRICE_PRICE_SHOWROOM != '' |
满足这个条件，可以正常浏览网站，但价格显示为自定义文字 (TEXT_LOGIN_FOR_PRICE_PRICE_SHOWROOM位于includes\languages\english.php) |
| CUSTOMERS_APPROVAL_AUTHORIZATION != '0' CUSTOMERS_APPROVAL_AUTHORIZATION != '3' $_SESSION['customer_id'] == '' (CUSTOMERS_APPROVAL_AUTHORIZATION后台Configuration-->Customer Details-->Customer Approval Status - Authorization Pending控制) |
满足这个条件，网站访问直接进入登陆页，要求登陆 |
| CUSTOMERS_APPROVAL_AUTHORIZATION != '0' CUSTOMERS_APPROVAL_AUTHORIZATION != '3' $_SESSION['customers_authorization'] > '0' |
满足这个条件，可以正常浏览网站，但价格显示为Price Unavailable (TEXT_AUTHORIZATION_PENDING_PRICE位于includes\languages\english.php) |
| default | 正常显示 |
if (STORE_STATUS != '0') {
if (STORE_STATUS == '1') {
return '';
}
}
STORE_STATUS后台Configuration-->My Store-->Store Status，0正常显示，1不显示，2展示价格但不能直接购买
// $new_fields = ', product_is_free, product_is_call, product_is_showroom_only';
$product_check = $db->Execute("select products_tax_class_id, products_price, products_priced_by_attribute, product_is_free, product_is_call, products_type from " . TABLE_PRODUCTS . " where products_id = '" . (int)$products_id . "'" . " limit 1");
// no prices on Document General
if ($product_check->fields['products_type'] == 3) {
return '';
}
查询数据库表products中相关情况，如果产品是文档类型products_type=3，则不显示价格
$display_normal_price = zen_get_products_base_price($products_id);
$display_special_price = zen_get_products_special_price($products_id, true);
$display_sale_price = zen_get_products_special_price($products_id, false);
正常价格，特价，促销价格
$show_sale_discount = '';
if (SHOW_SALE_DISCOUNT_STATUS == '1' and ($display_special_price != 0 or $display_sale_price != 0)) {
if ($display_sale_price) {
if (SHOW_SALE_DISCOUNT == 1) {
if ($display_normal_price != 0) {
$show_discount_amount = number_format(100 - (($display_sale_price / $display_normal_price) * 100),SHOW_SALE_DISCOUNT_DECIMALS);
} else {
$show_discount_amount = '';
}
$show_sale_discount = '<span class="productPriceDiscount">' . '<br />' . PRODUCT_PRICE_DISCOUNT_PREFIX . $show_discount_amount . PRODUCT_PRICE_DISCOUNT_PERCENTAGE . '</span>';
} else {
$show_sale_discount = '<span class="productPriceDiscount">' . '<br />' . PRODUCT_PRICE_DISCOUNT_PREFIX . $currencies->display_price(($display_normal_price - $display_sale_price), zen_get_tax_rate($product_check->fields['products_tax_class_id'])) . PRODUCT_PRICE_DISCOUNT_AMOUNT . '</span>';
}
} else {
if (SHOW_SALE_DISCOUNT == 1) {
$show_sale_discount = '<span class="productPriceDiscount">' . '<br />' . PRODUCT_PRICE_DISCOUNT_PREFIX . number_format(100 - (($display_special_price / $display_normal_price) * 100),SHOW_SALE_DISCOUNT_DECIMALS) . PRODUCT_PRICE_DISCOUNT_PERCENTAGE . '</span>';
} else {
$show_sale_discount = '<span class="productPriceDiscount">' . '<br />' . PRODUCT_PRICE_DISCOUNT_PREFIX . $currencies->display_price(($display_normal_price - $display_special_price), zen_get_tax_rate($product_check->fields['products_tax_class_id'])) . PRODUCT_PRICE_DISCOUNT_AMOUNT . '</span>';
}
}
}
是否显示优惠百分比的判断，SHOW_SALE_DISCOUNT_STATUS在后台Configuration-->Product Info-->Product Info - Show Sales Discount Savings Status
number_format()数字格式化函数
if ($display_normal_price == 0) {
// don't show the $0.00
$final_display_price = $show_special_price . $show_sale_price . $show_sale_discount;
} else {
$final_display_price = $show_normal_price . $show_special_price . $show_sale_price . $show_sale_discount;
}
// If Free, Show it
if ($product_check->fields['product_is_free'] == '1') {
if (OTHER_IMAGE_PRICE_IS_FREE_ON=='0') {
$free_tag = '<br />' . PRODUCTS_PRICE_IS_FREE_TEXT;
} else {
$free_tag = '<br />' . zen_image(DIR_WS_TEMPLATE_IMAGES . OTHER_IMAGE_PRICE_IS_FREE, PRODUCTS_PRICE_IS_FREE_TEXT);
}
}
// If Call for Price, Show it
if ($product_check->fields['product_is_call']) {
if (PRODUCTS_PRICE_IS_CALL_IMAGE_ON=='0') {
$call_tag = '<br />' . PRODUCTS_PRICE_IS_CALL_FOR_PRICE_TEXT;
} else {
$call_tag = '<br />' . zen_image(DIR_WS_TEMPLATE_IMAGES . OTHER_IMAGE_CALL_FOR_PRICE, PRODUCTS_PRICE_IS_CALL_FOR_PRICE_TEXT);
}
}
这3段分别决定价格为0，免费商品，价格面议时的表现形式
声明: 本文由Ezencart原创,转载请保留链接:ZenCart价格输出函数：zen_get_products_display_price()分析
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