Home > php教程 > php手册 > PHP/MySQL 购物车程序

PHP/MySQL 购物车程序

WBOY
Release: 2016-06-21 09:02:23
Original
1088 people have browsed it

 

    
  if(!$session && !$scid) {
  $session = md5(uniqid(rand()));
  SetCookie("scid", "$session", time() + 14400);
  } /* last number is expiration time in seconds, 14400 sec = 4 hrs */
  
  class Cart {
  function check_item($table, $session, $product) {
  $query = "SELECT * FROM $table WHERE session='$session' AND product='$product' ";
  $result = mysql_query($query);
  
  if(!$result) {
  return 0;
  }
  
  $numRows = mysql_num_rows($result);
  
  if($numRows == 0) {
  return 0;
  } else {
  $row = mysql_fetch_object($result);
  return $row->quantity;
  }
  }
  
  function add_item($table, $session, $product, $quantity) {
  $qty = $this->check_item($table, $session, $product);
  if($qty == 0) {
  $query = "INSERT INTO $table (session, product, quantity) VALUES ";
  $query .= "('$session', '$product', '$quantity') ";
  mysql_query($query);
  } else {
  $quantity += $qty;
  $query = "UPDATE $table SET quantity='$quantity' WHERE session='$session' AND ";
  $query .= "product='$product' ";
  mysql_query($query);
  }
  }
  
  function delete_item($table, $session, $product) {
  $query = "DELETE FROM $table WHERE session='$session' AND product='$product' ";
  mysql_query($query);
  }
  
  function modify_quantity($table, $session, $product, $quantity) {
  $query = "UPDATE $table SET quantity='$quantity' WHERE session='$session' ";
  $query .= "AND product='$product' ";
  mysql_query($query);
  }
  
  function clear_cart($table, $session) {
  $query = "DELETE FROM $table WHERE session='$session' ";
  mysql_query($query);
  }
  
  function cart_total($table, $session) {
  $query = "SELECT * FROM $table WHERE session='$session' ";
  $result = mysql_query($query);
  if(mysql_num_rows($result) > 0) {
  while($row = mysql_fetch_object($result)) {
  $query = "SELECT price FROM inventory WHERE product='$row->product' ";
  $invResult = mysql_query($query);
  $row_price = mysql_fetch_object($invResult);
  $total += ($row_price->price * $row->quantity);
  }
  }
  return $total;
  }
  
  function display_contents($table, $session) {
  $count = 0;
  $query = "SELECT * FROM $table WHERE session='$session' ORDER BY id ";
  $result = mysql_query($query);
  while($row = mysql_fetch_object($result)) {
  $query = "SELECT * FROM inventory WHERE product='$row->product' ";
  $result_inv = mysql_query($query);
  $row_inventory = mysql_fetch_object($result_inv);
  $contents["product"][$count] = $row_inventory->product;
  $contents["price"][$count] = $row_inventory->price;
  $contents["quantity"][$count] = $row->quantity;
  $contents["total"][$count] = ($row_inventory->price * $row->quantity);
  $contents["description"][$count] = $row_inventory->description;
  $count++;
  }
  $total = $this->cart_total($table, $session);
  $contents["final"] = $total;
  return $contents;
  }
  
  function num_items($table, $session) {
  $query = "SELECT * FROM $table WHERE session='$session' ";
  $result = mysql_query($query);
  $num_rows = mysql_num_rows($result);
  return $num_rows;
  }
  
  function quant_items($table, $session) {
  $quant = 0;
  $query = "SELECT * FROM $table WHERE session='$session' ";
  $result = mysql_query($query);
  while($row = mysql_fetch_object($result)) {
  $quant += $row->quantity;
  }
  return $quant;
  }
  }
  ?>
  
  /*
  This part contains a description of how to create the tables on your mysql server.
  
  # MySQL dump 6.0
  #
  # Host: localhost Database: kmartShopper
  #--------------------------------------------------------
  # Server version 3.22.25
  
  #
  # Table structure for table 'inventory'
  #
  CREATE TABLE inventory (
  product tinytext NOT NULL,
  quantity tinytext NOT NULL,
  id int(4) DEFAULT '0' NOT NULL auto_increment,
  description tinytext NOT NULL,
  price float(10,2) DEFAULT '0.00' NOT NULL,
  category char(1) DEFAULT '' NOT NULL,
  KEY id (id),
  PRIMARY KEY (id),
  KEY price (price)
  );
  
  #
  # Table structure for table 'shopping'
  #
  CREATE TABLE shopping (
  session tinytext NOT NULL,
  product tinytext NOT NULL,
  quantity tinytext NOT NULL,
  card tinytext NOT NULL,
  id int(4) DEFAULT '0' NOT NULL auto_increment,
  KEY id (id),
  PRIMARY KEY (id)
  );
  */
  
  Example
  
  include("shoppingcart.php");
  $cart = new Cart;
  $mysql_link = mysql_connect("localhost", "wwwrun", "");
  $mysql_select_db("kmartShopper", $mysql_link) /* heh, use whatever database name you put the 2 tables under in place of kmartShopper */
  ?>
  /* call functions like $cart->add_item and such, see the code. */
  
  



Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Recommendations
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template