PHP Shopping Cart Class implementation code example

Shopping Cart Category /* Instructions for use: constructor cart can use parameters: Cart ($cartname = ' Mycart ', $session _id = ', $savetype = ' Session ', $cookietime = 86400, $cookiepath = '/', $cookiedomain = '') $cartname is the logo of the shopping cart, can be specified, can guarantee no duplicate name, there will be no related conflict $session _id is session_id, the default is to use a cookie to transfer, or can be customized, if the storage type is session is not effective $savetype storage type, with session and cookie mode ... Others are the parameters required by the cookie When the program itself is used to the session, it is recommended to change this PHP shopping cart class to a cookie implementation. Add a Product Reference class Require_once './cart.class.php '; Creating class instances $cart = new cart (); The item already exists modification data if ($cart->data[$id]) { $cart->data[$id [' count '] + = $count; $cart->data[$id [' money '] + = $cart->data[$id] [' Price '] * $count; Add Item } else { $cart->data[$id [' name '] = $name; $cart->data[$id [' price '] = $price; $cart->data[$id [' count '] = $count; $cart->data[$id [' money '] = $price * $COUNT; } Save Shopping Cart Data $cart->save (); Edit an item quantity Reference class Require_once './cart.class.php '; Creating class instances $cart = new cart (); The item already exists modification data if ($cart->data[$id]) { $cart->data[$id [' count '] = $count; $cart->data[$id [' money '] = $cart->data[$id] [' Price '] * $count; Save Shopping Cart Data $cart->save (); } Delete a product Reference class Require_once './cart.class.php '; Creating class instances $cart = new cart (); Delete Item unset ($cart->data[$id]); Save Shopping Cart Data $cart->save (); List Shopping Cart Reference class Require_once './cart.class.php '; Creating class instances $cart = new cart (); foreach ($cart->data as $k = + $v) { Echo ' Product ID: '. $k; Echo ' Product name: '. $v [' name ']; Echo ' Unit Price: '. $v [' prices ']; Echo ' Number of items: '. $v [' count ']; Echo ' Total merchandise: '. $v [' money ']; } Total cumulative---of a field such as Total price of all goods Reference class Require_once './cart.class.php '; Creating class instances $cart = new cart (); Accumulated Money Field $cart->sum (' money ') Empty shopping Cart Reference class Require_once './cart.class.php '; Creating class instances $cart = new cart (); Clear Data unset ($cart->data); Save Shopping Cart Data $cart->save (); */ Shopping Cart Category Edit bbs.it-home.org Class Cart { Shopping Cart Logo var $cartname = '; Storage type var $savetype = '; Product data in Shopping cart var $data = array (); Cookie data var $cookietime = 0; var $cookiepath = '/'; var $cookiedomain = '; Constructor (shopping cart identification, $session _id, storage type (session or cookie), default is day time, $cookiepath, $cookiedomain) function cart ($cartname = ' Mycart ', $session _id = ', $savetype = ' Session ', $cookietime = 86400, $cookiepath = '/', $cook Iedomain = ") { Using Session Storage if ($savetype = = ' Session ') { if (! $session _id && $_cookie[$cartname. ' _session_id ']) { session_id ($_cookie[$cartname. ' _session_id ']); } elseif ($session _id) session_id ($session _id); Session_Start (); if (! $session _id &&!$_cookie[$cartname. ' _session_id ']) Setcookie ($cartname. ' _session_id ', session_id (), $cookietime + Time (), $cookiepath, $cookiedomain); } $this->cartname = $cartname; $this->savetype = $savetype; $this->cookietime = $cookietime; $this->cookiepath = $cookiepath; $this->cookiedomain = $cookiedomain; $this->readdata (); } Reading data function ReadData () { if ($this->savetype = = ' Session ') { if ($_session[$this->cartname] && is_array ($_session[$this->cartname])) $this->data = $_session[$this->cartname]; Else $this->data = Array (); } elseif ($this->savetype = = ' Cookie ') { if ($_cookie[$this->cartname]) $this->data = unserialize ($_cookie[$this->cartname]); Else $this->data = Array (); } } Save Shopping Cart Data function Save () { if ($this->savetype = = ' Session ') { $_session[$this->cartname] = $this->data; } elseif ($this->savetype = = ' Cookie ') { if ($this->data) Setcookie ($this->cartname, serialize ($this->data), $this->cookietime + time (), $this->cookiepath, $this- >cookiedomain); } } Returns a field increment of a product function sum ($field) { $sum = 0; if ($this->data) foreach ($this->data as $v) if ($v [$field]) $sum + = $v [$field] + 0; return $sum; } } ?> Copy Code

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