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get_contents(); The functions are documented below. ADDING AN ITEM $cart->add_item( code , quantity , price , info ) If you have a widget with code AB313 and a price of $40.11, you can add it to the cart with : $cart->add_item('AB313',1,40.11,'Widget AB313 Standard'); if the item AB313 is alreay in the cart, then the quantity of it will be increased by the quantity supplied to the function, in this case 1 the itemid must be unique, and can be letters and/or numbers. DELETING AN ITEM $cart->del_item( itemid ); CHANGING A QUANTITY $cart->edit_item( itemid, new_quantity ); if you set the quanitity to zero, the item is deleted. GETTING THE NUMBER OF ITEMS IN CART echo $cart->itemcount; GETTING THE TOTAL VALUE OF THE CART echo $cart->total; EMPTING THE CART $cart->empty_cart(); GETTING THE CART CONTENTS $items = $cart->get_contents(); .. and how to display them .. foreach($items as $item) { echo "Code/ID :".$item['id']."
"; echo "Quantity:".$item['qty']."
"; echo "Price :".$item['price']."
"; echo "Info :".$item['info']."
"; echo "Subtotal".$item['subtotal']."
"; } note, subtotal is quantity X price for that item, not a running total.. EXTENDING Webforce Cart There are 2 functions you can create that will enable more flexability. One is wf_get_price( itemid, qty ). If you need to do pricing based on Quantity ( e.g. bulk discounts ) then you can create a function called wf_get_price to do what you need itto do. If you do not pass a price to add_item, then the wf_ get_price function will be called. If you use this functionality, AND your price is quantity dependant, then you must uncomment the line in the edit_item function. The other is wf_get_info, again, if you do not pass info to add_item then get_info will be called. TIP: you do not have to pass a string to add_item(), you could use an array of infomation instead. e.g. add_item( 'AS2112',5,19.95,array('size'=>'large','color'=>'red')); then when you use get_contents, you echo $item['info']['color'] etc. BUGS/PATCHES Please email eaden@webforce.co.nz with any bugs/fixes/patches/comments etc. See http://www.webforce.co.nz/cart/ for updates to this script */ class wfCart { var $total = 0; var $itemcount = 0; var $items = array(); var $itemprices = array(); var $itemqtys = array(); var $iteminfo = array(); function cart() {} // constructor function function get_contents() { // gets cart contents $items = array(); foreach($this->items as $tmp_item) { $item = FALSE; $item['id'] = $tmp_item; $item['qty'] = $this->itemqtys[$tmp_item]; $item['price'] = $this->itemprices[$tmp_item]; $item['info'] = $this->iteminfo[$tmp_item]; $item['subtotal'] = $item['qty'] * $item['price']; $items[] = $item; } return $items; } // end of get_contents function add_item($itemid,$qty=1,$price = FALSE, $info = FALSE) { // adds an item to cart if(!$price) { $price = wf_get_price($itemid,$qty); } if(!$info) { $info = wf_get_info($itemid); } if($this->itemqtys[$itemid] > 0) { // the item is already in the cart.. // so we'll just increase the quantity $this->itemqtys[$itemid] = $qty + $this->itemqtys[$itemid]; $this->_update_total(); } else { $this->items[]=$itemid; $this->itemqtys[$itemid] = $qty; $this->itemprices[$itemid] = $price; $this->iteminfo[$itemid] = $info; } $this->_update_total(); } // end of add_item function edit_item($itemid,$qty) { // changes an items quantity if($qty < 1) { $this->del_item($itemid); } else { $this->itemqtys[$itemid] = $qty; // uncomment this line if using // the wf_get_price function // $this->itemprices[$itemid] = wf_get_price($itemid,$qty); } $this->_update_total(); } // end of edit_item function del_item($itemid) { // removes an item from cart $ti = array(); $this->itemqtys[$itemid] = 0; foreach($this->items as $item) { if($item != $itemid) { $ti[] = $item; } } $this->items = $ti; $this->_update_total(); } //end of del_item function empty_cart() { // empties / resets the cart $this->total = 0; $this->itemcount = 0; $this->items = array(); $this->itemprices = array(); $this->itemqtys = array(); $this->itemdescs = array(); } // end of empty cart function _update_total() { // internal function to update the total in the cart $this->itemcount = 0; $this->total = 0; if(sizeof($this->items > 0)) { foreach($this->items as $item) { $this->total = $this->total + ($this->itemprices[$item] * $this->itemqtys[$item]); $this->itemcount++; } } } // end of update_total } ?>