Php shopping cart implementation code example

Php shopping cart implementation code example

// Shopping cart type /* Instructions for use: The constructor cart can use the following parameters: Cart ($ cartname = 'mycart', $ session_id = '', $ savetype = 'session', $ cookietime = 86400, $ cookiepath = '/', $ cookiedomain = '') $ Cartname is the identifier of the shopping cart. it can be specified to ensure no duplicate names and no conflicts. $ Session_id is session_id, which is transmitted using cookies by default. It can also be customized. it takes effect only when the storage type is session. $ Savetype storage type, with session and cookie methods ... Other parameters required by cookies When the program uses session, we recommend that you change the php shopping cart class to cookie. // Add a product // Reference class Require_once './cart. class. php '; // Create a class instance $ Cart = new cart (); // The item has been modified. If ($ cart-> data [$ id]) { $ Cart-> data [$ id] ['count'] + = $ count; $ Cart-> data [$ id] ['Money'] + = $ cart-> data [$ id] ['price'] * $ count; // Add product } Else { $ Cart-> data [$ id] ['name'] = $ name; $ Cart-> data [$ id] ['price'] = $ price; $ Cart-> data [$ id] ['count'] = $ count; $ Cart-> data [$ id] ['Money'] = $ price * $ count; } // Save the shopping cart data $ Cart-> save (); Edit the number of items // Reference class Require_once './cart. class. php '; // Create a class instance $ Cart = new cart (); // The item has been modified. If ($ cart-> data [$ id]) { $ Cart-> data [$ id] ['count'] = $ count; $ Cart-> data [$ id] ['Money'] = $ cart-> data [$ id] ['price'] * $ count; // Save the shopping cart data $ Cart-> save (); } Delete a product // Reference class Require_once './cart. class. php '; // Create a class instance $ Cart = new cart (); // Delete the product Unset ($ cart-> data [$ id]); // Save the shopping cart data $ Cart-> save (); List shopping cart // Reference class Require_once './cart. class. php '; // Create a class instance $ Cart = new cart (); Foreach ($ cart-> data AS $ k => $ v ){ Echo 'item ID: '. $ k; Echo 'item name: '. $ v ['name']; Echo 'unit price: '. $ v ['price']; Echo 'item quantity: '. $ v ['count']; Echo 'total Price: '. $ v ['Money']; } Total sum of a field --- for example, total price of all commodities // Reference class Require_once './cart. class. php '; // Create a class instance $ Cart = new cart (); // Accumulative money field $ Cart-> sum ('Money ') Clear shopping cart // Reference class Require_once './cart. class. php '; // Create a class instance $ Cart = new cart (); // Clear data Unset ($ cart-> data ); // Save the shopping cart data $ Cart-> save (); */ // Shopping cart type // Edit bbs.it-home.org Class cart { // Shopping cart ID Var $ cartname = ''; // Storage type Var $ savetype = ''; // Item data in the shopping cart Var $ data = array (); // Cookie data Var $ cookietime = 0; Var $ cookiepath = '/'; Var $ cookiedomain = ''; // Constructor (shopping cart ID, $ session_id, storage type (session or cookie), default is one day, $ cookiepath, $ cookiedomain) Function cart ($ cartname = 'mycart', $ session_id = '', $ savetype = 'session', $ cookietime = 86400, $ cookiepath = '/', $ cookiedomain = ''){ // Use 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 (); } // Read 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 = 'cookies '){ If ($ _ COOKIE [$ this-> cartname]) $ This-> data = unserialize ($ _ COOKIE [$ this-> cartname]); Else $ This-> data = array (); } } // Save the shopping cart data Function save (){ If ($ this-> savetype = 'session '){ $ _ SESSION [$ this-> cartname] = $ this-> data; } Elseif ($ this-> savetype = 'cookies '){ If ($ this-> data) Setcookie ($ this-> cartname, serialize ($ this-> data), $ this-> cookietime + time (), $ this-> cookiepath, $ this-> cookiedomain ); } } // Returns a product field to accumulate Function sum ($ field ){ $ Sum = 0; If ($ this-> data) Foreach ($ this-> data AS $ v) If ($ v [$ field]) $ Sum + = $ v [$ field] + 0; Return $ sum; } } ?>