PHP WC_Product::exists方法代码示例

 /**
  * Gets a user's downloadable products if they are logged in.
  *
  * @access public
  * @return array Array of downloadable products
  */
 function get_downloadable_products()
 {
     global $wpdb;
     $downloads = array();
     if (is_user_logged_in()) {
         $user_info = get_userdata(get_current_user_id());
         $results = $wpdb->get_results($wpdb->prepare("SELECT * FROM " . $wpdb->prefix . "woocommerce_downloadable_product_permissions WHERE user_id = '%s';", get_current_user_id()));
         if ($results) {
             foreach ($results as $result) {
                 if ($result->order_id > 0) {
                     $order = new WC_Order($result->order_id);
                     if ($order->status != 'completed' && $order->status != 'processing') {
                         continue;
                     }
                     $product_post = get_post($result->product_id);
                     if (!$product_post) {
                         continue;
                     }
                     if ($product_post->post_type == 'product_variation') {
                         $_product = new WC_Product_Variation($result->product_id);
                     } else {
                         $_product = new WC_Product($result->product_id);
                     }
                     if ($_product->exists()) {
                         $download_name = $_product->get_title();
                     } else {
                         $download_name = '#' . $result->product_id;
                     }
                     $downloads[] = array('download_url' => add_query_arg('download_file', $result->product_id, add_query_arg('order', $result->order_key, add_query_arg('email', $result->user_email, home_url()))), 'product_id' => $result->product_id, 'download_name' => $download_name, 'order_id' => $order->id, 'order_key' => $order->order_key, 'downloads_remaining' => $result->downloads_remaining);
                 }
             }
         }
     }
     return apply_filters('woocommerce_customer_get_downloadable_products', $downloads);
 }

			<th class="product-name">&nbsp;</th>
			<th class="product-price">&nbsp;</th>
			<th class="product-add-to-cart">&nbsp;</th>
            <th class="product-remove">&nbsp;</th>
		</tr>
	</thead>
	<tbody>
    <?php 
$i = 1;
foreach ($aUsersWishlist as $iProductId => $aWshlistItemData) {
    if ($aWshlistItemData['type'] == 'variable' && !empty($aWshlistItemData['vid'])) {
        foreach ($aWshlistItemData['vid'] as $iVariableProductId) {
            $oProduct = new WC_Product_Variation($iVariableProductId, $iProductId);
            if ($oProduct->exists()) {
                include UniWishlist()->plugin_path() . '/includes/views/item-variation-table-row.php';
            }
        }
    } else {
        $oProduct = new WC_Product($iProductId);
        if ($oProduct->exists()) {
            include UniWishlist()->plugin_path() . '/includes/views/item-table-row.php';
        }
    }
    $i++;
}
?>
    </tbody>
</table>

<?php 
do_action('uni_wishlist_after_table_action');

 /**
  * Add a product to the cart
  *
  * @param   string	product_id	contains the id of the product to add to the cart
  * @param   string	quantity	contains the quantity of the item to add
  * @param   int     variation_id
  * @param   array   variation attribute values
  */
 function add_to_cart($product_id, $quantity = 1, $variation_id = '', $variation = '')
 {
     global $woocommerce;
     if ($quantity < 1) {
         return false;
     }
     // Load cart item data - may be added by other plugins
     $cart_item_data = (array) apply_filters('woocommerce_add_cart_item_data', array(), $product_id);
     // Generate a ID based on product ID, variation ID, variation data, and other cart item data
     $cart_id = $this->generate_cart_id($product_id, $variation_id, $variation, $cart_item_data);
     // See if this product and its options is already in the cart
     $cart_item_key = $this->find_product_in_cart($cart_id);
     if ($variation_id > 0) {
         $product_data = new WC_Product_Variation($variation_id);
     } else {
         $product_data = new WC_Product($product_id);
     }
     // Type/Exists check
     if ($product_data->is_type('external') || !$product_data->exists()) {
         $woocommerce->add_error(__('This product cannot be purchased.', 'woocommerce'));
         return false;
     }
     // Price set check
     if ($product_data->get_price() === '') {
         $woocommerce->add_error(__('This product cannot be purchased - the price is not yet set.', 'woocommerce'));
         return false;
     }
     // Stock check - only check if we're managing stock and backorders are not allowed
     if (!$product_data->has_enough_stock($quantity)) {
         $woocommerce->add_error(sprintf(__('You cannot add that amount to the cart since there is not enough stock. We have %s in stock.', 'woocommerce'), $product_data->get_stock_quantity()));
         return false;
     } elseif (!$product_data->is_in_stock()) {
         $woocommerce->add_error(__('You cannot add that product to the cart since the product is out of stock.', 'woocommerce'));
         return false;
     }
     if ($cart_item_key) {
         $quantity = $quantity + $this->cart_contents[$cart_item_key]['quantity'];
         // Stock check - this time accounting for whats already in-cart
         if (!$product_data->has_enough_stock($quantity)) {
             $woocommerce->add_error(sprintf(__('You cannot add that amount to the cart since there is not enough stock. We have %s in stock and you already have %s in your cart.', 'woocommerce'), $product_data->get_stock_quantity(), $this->cart_contents[$cart_item_key]['quantity']));
             return false;
         } elseif (!$product_data->is_in_stock()) {
             $woocommerce->add_error(__('You cannot add that product to the cart since the product is out of stock.', 'woocommerce'));
             return false;
         }
         $this->set_quantity($cart_item_key, $quantity);
     } else {
         // Add item after merging with $cart_item_data - hook to allow plugins to modify cart item
         $this->cart_contents[$cart_id] = apply_filters('woocommerce_add_cart_item', array_merge($cart_item_data, array('product_id' => $product_id, 'variation_id' => $variation_id, 'variation' => $variation, 'quantity' => $quantity, 'data' => $product_data)));
     }
     $this->set_session();
     return true;
 }

				if (isset($item['variation_id']) && $item['variation_id'] > 0) :
					$_product = new WC_Product_Variation( $item['variation_id'] );
				else :
					$_product = new WC_Product( $item['id'] );
				endif;

				echo '
					<tr class = "' . esc_attr( apply_filters('woocommerce_order_table_item_class', 'order_table_item', $item, $order ) ) . '">
						<td class="product-name">';

				echo '<a href="'.get_permalink( $item['id'] ).'">' . $item['name'] . '</a>';

				$item_meta = new WC_Order_Item_Meta( $item['item_meta'] );
				$item_meta->display();

				if ( $_product->exists() && $_product->is_downloadable() && $_product->has_file() && ( $order->status=='completed' || ( get_option( 'woocommerce_downloads_grant_access_after_payment' ) == 'yes' && $order->status == 'processing' ) ) ) :

					echo '<br/><small><a href="' . $order->get_downloadable_file_url( $item['id'], $item['variation_id'] ) . '">' . __('Download file &rarr;', 'woocommerce') . '</a></small>';

				endif;

				echo '</td><td class="product-quantity">'.$item['qty'].'</td><td class="product-total">' . $order->get_formatted_line_subtotal($item) . '</td></tr>';

				// Show any purchase notes
				if ($order->status=='completed' || $order->status=='processing') :
					if ($purchase_note = get_post_meta( $_product->id, '_purchase_note', true)) :
						echo '<tr class="product-purchase-note"><td colspan="3">' . apply_filters('the_content', $purchase_note) . '</td></tr>';
					endif;
				endif;

			endforeach;

 /**
  * Add a product to the cart
  *
  * @param string $product_id contains the id of the product to add to the cart
  * @param string $quantity contains the quantity of the item to add
  * @param int $variation_id
  * @param array $variation attribute values
  * @param array $cart_item_data extra cart item data we want to pass into the item
  * @return bool
  */
 function add_to_cart($product_id, $quantity = 1, $variation_id = '', $variation = '', $cart_item_data = array())
 {
     global $woocommerce;
     if ($quantity < 1) {
         return false;
     }
     // Load cart item data - may be added by other plugins
     $cart_item_data = (array) apply_filters('woocommerce_add_cart_item_data', $cart_item_data, $product_id);
     // Generate a ID based on product ID, variation ID, variation data, and other cart item data
     $cart_id = $this->generate_cart_id($product_id, $variation_id, $variation, $cart_item_data);
     // See if this product and its options is already in the cart
     $cart_item_key = $this->find_product_in_cart($cart_id);
     if ($variation_id > 0) {
         $product_data = new WC_Product_Variation($variation_id);
     } else {
         $product_data = new WC_Product($product_id);
     }
     // Force quantity to 1 if sold individually
     if ($product_data->is_sold_individually()) {
         $quantity = 1;
     }
     // Type/Exists check
     if ($product_data->is_type('external') || !$product_data->exists()) {
         $woocommerce->add_error(__('This product cannot be purchased.', 'woocommerce'));
         return false;
     }
     // Price set check
     if ($product_data->get_price() === '') {
         $woocommerce->add_error(__('This product cannot be purchased - the price is not yet set.', 'woocommerce'));
         return false;
     }
     // Stock check - only check if we're managing stock and backorders are not allowed
     if (!$product_data->has_enough_stock($quantity)) {
         $woocommerce->add_error(sprintf(__('You cannot add that amount to the cart since there is not enough stock. We have %s in stock.', 'woocommerce'), $product_data->get_stock_quantity()));
         return false;
     } elseif (!$product_data->is_in_stock()) {
         $woocommerce->add_error(__('You cannot add that product to the cart since the product is out of stock.', 'woocommerce'));
         return false;
     }
     // Downloadable/virtual qty check
     if ($product_data->is_sold_individually()) {
         $in_cart_quantity = $cart_item_key ? $this->cart_contents[$cart_item_key]['quantity'] + $quantity : $quantity;
         // If its greater than 1, its already in the cart
         if ($in_cart_quantity > 1) {
             $woocommerce->add_error(sprintf('<a href="%s" class="button">%s</a> %s', get_permalink(woocommerce_get_page_id('cart')), __('View Cart &rarr;', 'woocommerce'), __('You already have this item in your cart.', 'woocommerce')));
             return false;
         }
     }
     // Stock check - this time accounting for whats already in-cart
     $product_qty_in_cart = $this->get_cart_item_quantities();
     if ($product_data->managing_stock()) {
         // Variations
         if ($variation_id && $product_data->variation_has_stock) {
             if (isset($product_qty_in_cart[$variation_id]) && !$product_data->has_enough_stock($product_qty_in_cart[$variation_id] + $quantity)) {
                 $woocommerce->add_error(sprintf(__('<a href="%s" class="button">%s</a> You cannot add that amount to the cart &mdash; we have %s in stock and you already have %s in your cart.', 'woocommerce'), get_permalink(woocommerce_get_page_id('cart')), __('View Cart &rarr;', 'woocommerce'), $product_data->get_stock_quantity(), $product_qty_in_cart[$variation_id]));
                 return false;
             }
             // Products
         } else {
             if (isset($product_qty_in_cart[$product_id]) && !$product_data->has_enough_stock($product_qty_in_cart[$product_id] + $quantity)) {
                 $woocommerce->add_error(sprintf(__('<a href="%s" class="button">%s</a> You cannot add that amount to the cart &mdash; we have %s in stock and you already have %s in your cart.', 'woocommerce'), get_permalink(woocommerce_get_page_id('cart')), __('View Cart &rarr;', 'woocommerce'), $product_data->get_stock_quantity(), $product_qty_in_cart[$product_id]));
                 return false;
             }
         }
     }
     // If cart_item_key is set, the item is already in the cart
     if ($cart_item_key) {
         $new_quantity = $quantity + $this->cart_contents[$cart_item_key]['quantity'];
         $this->set_quantity($cart_item_key, $new_quantity);
     } else {
         $cart_item_key = $cart_id;
         // Add item after merging with $cart_item_data - hook to allow plugins to modify cart item
         $this->cart_contents[$cart_item_key] = apply_filters('woocommerce_add_cart_item', array_merge($cart_item_data, array('product_id' => $product_id, 'variation_id' => $variation_id, 'variation' => $variation, 'quantity' => $quantity, 'data' => $product_data)), $cart_item_key);
     }
     do_action('woocommerce_add_to_cart', $cart_item_key, $product_id, $quantity, $variation_id, $variation, $cart_item_data);
     $woocommerce->cart_has_contents_cookie(true);
     $this->set_session();
     return true;
 }

 /**
  * Get the cart data from the PHP session and store it in class variables.
  *
  * @access public
  * @return void
  */
 function get_cart_from_session()
 {
     global $woocommerce;
     // Load the coupons
     if (get_option('woocommerce_enable_coupons') == 'yes') {
         $this->applied_coupons = empty($_SESSION['coupons']) ? array() : array_unique(array_filter((array) $_SESSION['coupons']));
     }
     // Load the cart
     if (isset($_SESSION['cart']) && is_array($_SESSION['cart'])) {
         $cart = $_SESSION['cart'];
         foreach ($cart as $key => $values) {
             if ($values['variation_id'] > 0) {
                 $_product = new WC_Product_Variation($values['variation_id']);
             } else {
                 $_product = new WC_Product($values['product_id']);
             }
             if ($_product->exists() && $values['quantity'] > 0) {
                 // Put session data into array. Run through filter so other plugins can load their own session data
                 $this->cart_contents[$key] = apply_filters('woocommerce_get_cart_item_from_session', array('product_id' => $values['product_id'], 'variation_id' => $values['variation_id'], 'variation' => $values['variation'], 'quantity' => $values['quantity'], 'data' => $_product), $values, $key);
             }
         }
         if (!is_array($this->cart_contents)) {
             $this->cart_contents = array();
         }
     } else {
         $this->cart_contents = array();
     }
     // Cookie
     if (sizeof($this->cart_contents) > 0) {
         $woocommerce->cart_has_contents_cookie(true);
     } else {
         $woocommerce->cart_has_contents_cookie(false);
     }
     // Load totals
     $this->cart_contents_total = isset($_SESSION['cart_contents_total']) ? $_SESSION['cart_contents_total'] : 0;
     $this->cart_contents_weight = isset($_SESSION['cart_contents_weight']) ? $_SESSION['cart_contents_weight'] : 0;
     $this->cart_contents_count = isset($_SESSION['cart_contents_count']) ? $_SESSION['cart_contents_count'] : 0;
     $this->cart_contents_tax = isset($_SESSION['cart_contents_tax']) ? $_SESSION['cart_contents_tax'] : 0;
     $this->total = isset($_SESSION['total']) ? $_SESSION['total'] : 0;
     $this->subtotal = isset($_SESSION['subtotal']) ? $_SESSION['subtotal'] : 0;
     $this->subtotal_ex_tax = isset($_SESSION['subtotal_ex_tax']) ? $_SESSION['subtotal_ex_tax'] : 0;
     $this->tax_total = isset($_SESSION['tax_total']) ? $_SESSION['tax_total'] : 0;
     $this->taxes = isset($_SESSION['taxes']) ? $_SESSION['taxes'] : array();
     $this->shipping_taxes = isset($_SESSION['shipping_taxes']) ? $_SESSION['shipping_taxes'] : array();
     $this->discount_cart = isset($_SESSION['discount_cart']) ? $_SESSION['discount_cart'] : 0;
     $this->discount_total = isset($_SESSION['discount_total']) ? $_SESSION['discount_total'] : 0;
     $this->shipping_total = isset($_SESSION['shipping_total']) ? $_SESSION['shipping_total'] : 0;
     $this->shipping_tax_total = isset($_SESSION['shipping_tax_total']) ? $_SESSION['shipping_tax_total'] : 0;
     $this->shipping_label = isset($_SESSION['shipping_label']) ? $_SESSION['shipping_label'] : '';
     // Queue re-calc if subtotal is not set
     if (!$this->subtotal && sizeof($this->cart_contents) > 0) {
         $this->set_session();
     }
 }

 /**
  * Handle group assignment : assign the user to the groups related to the subscription's product.
  * @param int $user_id
  * @param string $subscription_key
  */
 public static function activated_subscription($user_id, $subscription_key)
 {
     $subscription = WC_Subscriptions_Manager::get_users_subscription($user_id, $subscription_key);
     if (isset($subscription['product_id']) && isset($subscription['order_id'])) {
         $product_id = $subscription['product_id'];
         $order_id = $subscription['order_id'];
         // Leasving this here for reference, it can be assumed that normally,
         // if the product's groups are modified, a reactivation should take its
         // data from the current product, not from its previous state.
         // See if the subscription was activated before and try to get subscription's groups.
         // If there are any, use these instead of those from the product.
         // This is necessary when a subscription has been cancelled and re-activated and the
         // original product groups were modified since and we do NOT want to make group
         // assignments based on the current state of the product.
         $done = false;
         //$groups_product_groups = get_user_meta( $user_id, '_groups_product_groups', true );
         //if ( isset( $groups_product_groups[$order_id] ) && isset( $groups_product_groups[$order_id][$product_id] ) &&
         //	 isset( $groups_product_groups[$order_id][$product_id]['groups'] ) &&
         //	 isset( $groups_product_groups[$order_id][$product_id]['subscription_key'] ) &&
         //	( $groups_product_groups[$order_id][$product_id]['subscription_key'] === $subscription_key )
         //) {
         //	foreach( $groups_product_groups[$order_id][$product_id]['groups'] as $group_id ) {
         //		Groups_User_Group::create( $user_id, $group_id );
         //	}
         //	$done = true;
         //}
         // maybe unschedule pending expiration
         wp_clear_scheduled_hook('groups_ws_subscription_expired', array('user_id' => $user_id, 'subscription_key' => $subscription_key));
         if (!$done) {
             // get the product from the subscription
             $product = new WC_Product($product_id);
             if ($product->exists()) {
                 // get the groups related to the product
                 if ($product_groups = get_post_meta($product_id, '_groups_groups', false)) {
                     if (count($product_groups) > 0) {
                         // add the groups to the subscription (in case the product is changed later on, the subscription is still valid)
                         $groups_product_groups = get_user_meta($user_id, '_groups_product_groups', true);
                         if (empty($groups_product_groups)) {
                             $groups_product_groups = array();
                         }
                         $groups_product_groups[$order_id][$product_id]['groups'] = $product_groups;
                         $groups_product_groups[$order_id][$product_id]['subscription_key'] = $subscription_key;
                         update_user_meta($user_id, '_groups_product_groups', $groups_product_groups);
                         // add the user to the groups
                         foreach ($product_groups as $group_id) {
                             $result = Groups_User_Group::create(array('user_id' => $user_id, 'group_id' => $group_id));
                         }
                         Groups_WS_Terminator::mark_as_eternal($user_id, $group_id);
                     }
                 }
                 // remove from groups
                 if ($product_groups_remove = get_post_meta($product_id, '_groups_groups_remove', false)) {
                     if (count($product_groups_remove) > 0) {
                         $groups_product_groups_remove = get_user_meta($user_id, '_groups_product_groups_remove', true);
                         if (empty($groups_product_groups_remove)) {
                             $groups_product_groups_remove = array();
                         }
                         $groups_product_groups_remove[$order_id][$product_id]['groups'] = $product_groups_remove;
                         update_user_meta($user_id, '_groups_product_groups_remove', $groups_product_groups_remove);
                         // remove the user from the groups
                         foreach ($product_groups_remove as $group_id) {
                             $result = Groups_User_Group::delete($user_id, $group_id);
                         }
                     }
                 }
             }
         }
     }
 }

        /**
         * Generate the Google Checkout button link
         **/
        public function generate_googlecheckout_form($order_id)
        {
            global $woocommerce;
            require_once GOOGLE_CHECKOUT_LIB . 'googlecart.php';
            require_once GOOGLE_CHECKOUT_LIB . 'googleitem.php';
            require_once GOOGLE_CHECKOUT_LIB . 'googleshipping.php';
            require_once GOOGLE_CHECKOUT_LIB . 'googletax.php';
            $order = new WC_Order($order_id);
            $shipping_name = explode(' ', $order->shipping_method);
            // Check if this is a test purchase
            if ($this->testmode == 'yes') {
                $server_type = "sandbox";
            } else {
                $server_type = "checkout";
            }
            $merchant_id = $this->merchant_id;
            // Your Merchant ID
            $merchant_key = $this->merchant_key;
            // Your Merchant Key
            $currency = get_option('woocommerce_currency');
            $cart = new GoogleCart($merchant_id, $merchant_key, $server_type, $currency);
            // Specify <edit-cart-url>
            $cart->SetEditCartUrl(get_permalink(get_option('woocommerce_cart_page_id')));
            // Specify "Return to xyz" link
            $cart->SetContinueShoppingUrl(add_query_arg('key', $order->order_key, add_query_arg('order', $order_id, get_permalink(get_option('woocommerce_thanks_page_id')))));
            // Order key
            $cart->SetMerchantPrivateData(new MerchantPrivateData(array("cart-id" => $order->id)));
            // Request buyer's phone number
            $cart->SetRequestBuyerPhone(true);
            // Default tax  - for shipping, if used
            if ($order->order_shipping_tax > 0) {
                // We manually calculate the shipping tax percentage here
                $calculated_shipping_tax_percentage = $order->order_shipping_tax / $order->order_shipping;
                $tax_rule_for_shipping = new GoogleDefaultTaxRule($calculated_shipping_tax_percentage, 'true');
                $tax_rule_for_shipping->SetWorldArea(true);
                $cart->AddDefaultTaxRules($tax_rule_for_shipping);
            }
            // Shipping Cost
            if ($order->order_shipping > 0) {
                $ship_1 = new GoogleFlatRateShipping($order->shipping_method, number_format($order->order_shipping, 2));
                $restriction_1 = new GoogleShippingFilters();
                $restriction_1->SetAllowedWorldArea(true);
                $ship_1->AddShippingRestrictions($restriction_1);
                $cart->AddShipping($ship_1);
            }
            // Cart Contents
            $item_loop = 0;
            $myvat = array();
            if (sizeof($order->get_items()) > 0) {
                foreach ($order->get_items() as $item) {
                    $_product = new WC_Product($item['id']);
                    if ($_product->exists() && $item['qty']) {
                        $item_loop++;
                        // Change tax format from 25.00 to 0.25
                        $item_tax_percentage = number_format($order->get_item_tax($item, false) / $order->get_item_total($item, false, false) * 100, 2, '.', '');
                        $item_vat = $item_tax_percentage / 100;
                        $myvat[$item_loop] = $item_vat;
                        ${"item_" . $item_loop} = new GoogleItem($item['name'], "", $item['qty'], $order->get_item_total($item, false, false));
                        // Name the alternate-tax-table
                        $vat_name = "vat" . $item_vat;
                        ${"item_" . $item_loop}->SetMerchantItemId($item['id']);
                        ${"item_" . $item_loop}->SetTaxTableSelector($vat_name);
                        $cart->AddItem(${"item_" . $item_loop});
                    }
                }
            }
            // Discount
            if ($order->order_discount > 0) {
                $item_loop++;
                ${"item_" . $item_loop} = new GoogleItem(__('Discount', 'woothemes'), "", "1", -$order->order_discount);
                ${"item_" . $item_loop}->SetTaxTableSelector("no_tax");
                $cart->AddItem(${"item_" . $item_loop});
            }
            // Tax
            // Loops through all tax classes that has been added to the cart and add these as Alternate tax tables to google Checkout.
            $taxrule_loop = 1;
            $no_duplicate_vat = array_unique($myvat);
            foreach ($no_duplicate_vat as $value) {
                // Name the alternate-tax-table
                $vat_name = "vat" . $value;
                $tax_table = new GoogleAlternateTaxTable($vat_name);
                ${"tax_rule_" . $taxrule_loop} = new GoogleAlternateTaxRule($value);
                ${"tax_rule_" . $taxrule_loop}->SetWorldArea(true);
                $tax_table->AddAlternateTaxRules(${"tax_rule_" . $taxrule_loop});
                $cart->AddAlternateTaxTables($tax_table);
                $taxrule_loop++;
            }
            // The form
            return $cart->CheckoutButtonCode("SMALL") . '<script type="text/javascript">
						jQuery(function(){
							jQuery("body").block(
								{ 
									message: "<img src=\\"' . $woocommerce->plugin_url() . '/assets/images/ajax-loader.gif\\" alt=\\"Redirecting...\\" />' . __('Thank you for your order. We are now redirecting you to Google Checkout to make payment.', 'woothemes') . '", 
									overlayCSS: 
									{ 
										background: "#fff", 
										opacity: 0.6 
//.........这里部分代码省略.........

 /**
  * Returns true if the given product is downloadable with an attached
  * voucher
  *
  * @since 1.2
  * @param WC_Product $product the product to check for a voucher
  * @return boolean true if $product has a voucher, false otherwise
  */
 public static function has_voucher($product)
 {
     if (!$product->exists()) {
         return false;
     }
     return null !== self::get_voucher($product);
 }