PHP Shopping Cart class Cart.class.php definitions and usage examples _php tips

This article describes the Cart.class.php definition and usage of the PHP shopping cart class. Share to everyone for your reference, specific as follows:

The previous developers used JS technology to develop a set of front-end shopping cart (delete add what all use JS), but the browser is not compatible, today finally problems, there is a foreigner shopping products, due to the use of the unknown browser, Chrome, opera ... It is possible, therefore, that I have a job to rewrite the shopping cart.

Do not intend to use JS, directly consider PHP.

Found a shopping cart class, easy to use.

Cart.class.php Source:

<?php/** * Cart * * @author doodoo<pwtitle @yahoo. com.cn= "" > * @package cart * @category Cart
 * @license PHP License * @access public * @version $Revision: 1.10 $ */Class cart{var $cart; var $totalCount; Total quantity of commodities var $totalPrices;
  Total amount of merchandise/** * Cart Constructor * * Class constructor that keeps the shopping cart in a stable initialization state * * @static * @access public * @return void no return value
 * @param void no parameter/function Cart () {$this->totalcount = 0;
 $this->totalprice = 0;
 $this->cart = Array (); }//}}//{{Add ($item)/** * Add merchandise to current cart * * @access public * @param array $item commodity information (one-dimensional array: Array (commodity ID, commodity name, commodity price, Number of items) * @return Array returns an array of items in the current Cart/function Add ($item) {if (!is_array ($item) | |
 Is_null ($item)) return $this->cart; if (!is_numeric ($item) | | (!is_numeric (prev ($item)))
 {echo "Price and quantity must be number";
 return $this->cart; Reset ($item);
 This sentence is necessary because the above judgment has moved the array index $key = current ($item);
 if ($key = = "") Return $this->cart; if ($this->_isexists ($keY)) {//Does the product already exist?
 $this->cart[$key] [' count '] = end ($item);
 return $this->cart;
 $this->cart[$key] [' ID '] = $key;
 $this->cart[$key] [' name '] = next ($item);
 $this->cart[$key] [' price '] = next ($item);
 $this->cart[$key] [' count '] = next ($item);
 return $this->cart; }//}}//{{Add ($item)/** * Take some or all of the items out of the current cart * when $key = = "", empty the current cart * when $key!= "" && $count = "", from the current purchase The goods in the car to pick out the Product ID number $key All goods * when $key!= "" "&& $count!=" ", from the current shopping cart, pick out $count commodity ID number for $key goods * * @access public * @pa RAM string $key Commodity ID * @return Mixed returns a true or False or an array of items in the current shopping cart/function remove ($key = "", $count = "") {if ($key = = "") {$this
 ; cart = array ();
 return true;
 if (!array_key_exists ($key, $this->cart)) return false;
 if ($count = = "") {//Remove this category of commodity unset ($this->cart[$key]);
 }else{//Remove $count commodity $this->cart[$key [' count ']-= $count;
 if ($this->cart[$key] [' count ']<=0] unset ($this->cart[$key]);
 return $this->cart;
}//}}//{{Modi ($key, $value) /** * The number of items in the shopping cart for which the product ID is $key is $value * * @access public * @param string $key commodity ID * @param int $value Commodity quantity * @retu
 The RN array returns a list of the items in the current shopping cart;
 {//value too small to delete all unset ($this->cart[$key]);
 return $this->cart;
 $this->cart[$key] [' count '] = $value;
 return $this->cart;
 /** * Returns an array of items in the current cart * * @access public * @return Array returns an array of items in the current shopping cart;
 */function Getcart () {return $this->cart; }//{{_isexists ($key)/** * Determine if there is a commodity ID number $key in the current cart * * @access private * @param string $key commodity ID * @r
 Eturn bool True or false; * * Function _isexists ($key) {if (Isset ($this->cart[$key]) &&!empty ($this->cart[$key]) &&array_
 Key_exists ($key, $this->cart)) return true;
 return false;
 }//{{{IsEmpty ()/** * Determines whether the current shopping cart is empty, that is, there is no merchandise * @access public * @return bool true or false;
 */Function IsEmpty () {Return!count ($this->cart);
 }//}}//{{{_stat ()/** * Obtains partial statistics * * @access private * @return bool true or false;
 * * Function _stat () {if ($this->isempty ()) return false;
 foreach ($this->cart as $item) {$this->totalcount = @end ($item);
 $this->totalprices = @prev ($item);
 return true;
 }//}}//{{{totalprices ()/** * Obtains the total amount of all merchandise in the current cart * * @access public * @return float return amount;
 */function Totalprices () {if ($this->_stat ()) return $this->totalprices;
 return 0;
 }//}}//{{{IsEmpty ()/** * Obtains the total quantity of all merchandise for the current cart and * * @access public * @return int;
 */function TotalCount () {if ($this->_stat ()) return $this->totalcount;
 return 0;

 }}//end Class Cart?>

Ways to use this class:

<?php header ("Content-type:text/html;charset=utf8");
Invoke instance require_once ' Cart.class.php ';
Session_Start ();
if (!isset ($_session[' cart ')) {$_session[' cart '] = new cart;} $cart =& $_session[' cart '];
 if (($_server[' Request_method ']== "POST") && ($_post[' action ']== ' Add ')) {$p = $_post[' P '];
$items = $cart->add ($p); if ($_get[' action ']== ' remove ') && ($_get[' key ']!= ")) {$items = $cart->remove ($_get[' key ')); if ($_serv
 er[' Request_method ']== "POST") && ($_post[' action ']== ' Modi ')) {$key = $_post[' key '];
 $value = $_post[' value '];
 For ($i =0 $i <count ($key); $i = "" $items = "$cart-") {= "" >modi ($key [$i], $value [$i]);
}} $items = $cart->getcart ();
Print echo "";
SetLocale (lc_monetary, ' it_it ');
 foreach ($items as $item) {echo ""; echo "<table border=" 1 "><tbody><tr><form action=" \ "Index.php\" "method=" \ "Post\?? = "" ></form><td>id: ". $item [' ID ']." <input type= "hidden" value=. $item [' ID ']. "Name=" key[] ">"; EcHo "</td><td> Products:". $item [' name ']; echo "</td><td> Price:". $item [' prices ']; echo "</td><td><input value=". $item [' Count ']. "Name=" value[] ">"; $sum = $item [' Count ']* $item [' Price ']; echo "</td><td> total:". Round ($sum, 2); echo "</td><td><input onclick=" \ location= ' action=remove&key= ". $item [' ID ']." ' \ "type=" button "value=" delete ">"; echo "<input type=" hidden "value=" Modi "name=" action ">"; echo "</td></tr><tr><td colspan=" 7 "><input type=" Submit "value=" submitted query Content ">"; echo "</td></tr></tbody></table>";?>  

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I hope this article will help you with the PHP program design.