PHP Shopping Cart class cartclassphp definition and usage examples

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

Before the developers used JS Technology developed a set of front-end shopping cart (delete add what all use JS), but browser compatibility is not good, and today finally a problem, there is a foreigner shopping products, due to the use of unknown browser, Chrome, opera ... It is possible, therefore, that I have a job and 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 * * Shopping cart class * * @author Doodoo
 
  
 * @package cart * @category cart * @license PHP License * @access public * @version $Revision: 1.10 $ */class cart{ var $cart; var $totalCount; The total quantity of goods var $totalPrices;  Total amount of merchandise/** * Cart Constructor * * class constructor, so that the shopping cart to maintain a stable initialization status * * @static * @access public * @return void no return value * @param void parameterless */function Cart () {$this->totalcount = 0; $this->totalprice = 0; $this->cart = Array ();}//}}}//{ {{Add ($item)/** * Add Item to current CART * * @access public * @param array $item product information (one-dimensional array: Array (Product ID, product name, unit price, number of items) * @return arr AY returns an array of items in the current shopping cart */function Add ($item) {if (!is_array ($item) | | Is_null ($item)) return $this->cart; if (!is_numeric (end ($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 of indicators $key = current ($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)/** * Remove some or all items from the current shopping cart * when $key = = "", empty the current cart * when $key! = "" && $count = = "", pick a business from the current shopping cart  Product ID number is $key all items * when $key! = "" && $count! = "", pick out from the current shopping cart $count item ID number $key ITEMS * * @access public * @param string $key Product ID * @return Mixed returns an array of products that are true or false or in the current shopping cart */function Remove ($key = "", $count = "") {if ($key = = "") {$this->cart = array () ; return true; } if (!array_key_exists ($key, $this->cart)) return false; if ($count = = "") {//remove this type of commodity unset ($this->cart[$key]);} else{//removal of $count commodity $this->cart[$key] [' count ']-= $count, if ($this->cart[$key] [' count ']<=0) unset ($this- >cart[$key]); } return $this->cart; }//}}}//{{{Modi ($key, $value)/** * Modify the number of items in the shopping cart that have the item ID $key $value * * @access public * @param string $key item ID * @pa RAM int $value Number of items * @return Array returns the list of items in the current shopping cart; */Function Modi ($key, $valUE) {if (! $this->_isexists ($key)) return $this->cart ();/////The product is not present, return directly if ($value <=0) {//value is too small, 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 shopping cart * * @access public * @return Array returns a list of items in the current shopping cart; */function Getcart () {return $this->cart;}//}}}//{{{_isexists ($key)/** * Determine if there is an item with an item ID number $key in the current shopping cart * * @access Private * @param string $key Commodity ID * @return bool true or false; */function _isexists ($key) {if (Isset ($this->cart[$key]) &&!empty ($this->cart[$key]) &&array_ Key_exists ($key, $this->cart)) return true; return false; }//}}}//{{{isEmpty ()/** * Determines whether the current shopping cart is empty, that is, there is no item * * @access public * @return bool true or false; */function IsEmpty () {return!count ($this->cart);} }}}//{{{_stat ()/** * Get some statistics * * @access private * @return bool True or false; */function _stat () {if ($this->i Sempty ()) return false; foreach ($this->cart as $item) {$thIs->totalcount = @end ($item); $this->totalprices = @prev ($item); } return true; }//}}}//{{{totalprices ()/** * Gets the total amount of all items in the current shopping cart * * @access public * @return float return amount; */function Totalprices () {if ($this->_stat ()) return $this->totalprices; return 0; }//}}}//{{{isEmpty ()/** * Gets the total quantity of all items in the current shopping cart and * * @access public * @return int; */function TotalCount () {if ($this-&gt ; _stat ()) return $this->totalcount; return 0; }}//end Class cart?>
 

Ways to use this class:

<?phpheader ("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 (($_server[' Request_method ']== "POST") && ($_post[' action ']== ' Modi ') {$key = $_post[' key ']; $value = $_post[ ' Value ']; for ($i =0; $i
 
  
   Modi ($key [$i], $value [$i]); }} $items = $cart->getcart ();//Print echo ""; setlocale (lc_monetary, ' it_it '); foreach ($items as $item) {echo ""; echo "
   
 

  
    
  
 
   
 
    
ID: ". $item [' id '].""; echo "
 
    
Product: ". $item [' name ']; echo "
 
    
Unit Price: ". $item [' prices ']; echo "
 
    
"; $sum = $item [' Count ']* $item [' Price ']; echo "
 
    
Total: ". Round ($sum, 2); echo "
 
    
"; } echo ""; echo "
 
   
 
   
 
    
"; echo "
 
   
 
  
 
   
 
";? >
  
 

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