Detailed explanation of how to implement a shopping cart class with a storage period of one day in PHP

This article mainly introduces the shopping cart class in PHP with a storage period of 1 day in detail. It has a certain reference value. Interested friends can refer to

Shopping Cart Cookies Save , the storage period is 1 day. Note: The browser must support cookies to use

Sample code:

<?php
/**
 * 购物车类 Cookies 保存，保存周期为1天 注意：浏览器必须支持Cookie才能够使用
 */
class CartAPI {
  private $CartArray = array(); // 存放购物车的二维数组
  private $CartCount; // 统计购物车数量
  public $Expires = 86400; // Cookies过期时间，如果为0则不保存到本地 单位为秒
  /**
   * 构造函数 初始化操作 如果$Id不为空，则直接添加到购物车
   *
   */
  public function __construct($Id = "",$Name = "",$Price1 = "",$Price2 = "",$Price3 = "",$Count = "",$Image = "",$Expires = 86400) {
    if ($Id != "" && is_numeric($Id)) {
      $this->Expires = $Expires;
      $this->addCart($Id,$Name,$Price1,$Price2,$Price3,$Count,$Image);
    }
  }
  /**
   * 添加商品到购物车
   *
   * @param int $Id 商品的编号
   * @param string $Name 商品名称
   * @param decimal $Price1 商品价格
   * @param decimal $Price2 商品价格
   * @param decimal $Price3 商品价格
   * @param int $Count 商品数量
   * @param string $Image 商品图片
   * @return 如果商品存在，则在原来的数量上加1，并返回false
   */
  public function addCart($Id,$Name,$Price1,$Price2,$Price3,$Count,$Image) {
    $this->CartArray = $this->CartView(); // 把数据读取并写入数组
    if ($this->checkItem($Id)) { // 检测商品是否存在
      $this->ModifyCart($Id,$Count,0); // 商品数量加$Count
      return false;
    }
    $this->CartArray[0][$Id] = $Id;
    $this->CartArray[1][$Id] = $Name;
    $this->CartArray[2][$Id] = $Price1;
    $this->CartArray[3][$Id] = $Price2;
    $this->CartArray[4][$Id] = $Price3;
    $this->CartArray[5][$Id] = $Count;
    $this->CartArray[6][$Id] = $Image;
    $this->save();
  }
  /**
   * 修改购物车里的商品
   *
   * @param int $Id 商品编号
   * @param int $Count 商品数量
   * @param int $Flag 修改类型 0：加 1:减 2:修改 3:清空
   * @return 如果修改失败，则返回false
   */
  public function ModifyCart($Id, $Count, $Flag = "") {
    $tmpId = $Id;
    $this->CartArray = $this->CartView(); // 把数据读取并写入数组
    $tmpArray = &$this->CartArray; // 引用
    if (!is_array($tmpArray[0])) return false;
    if ($Id < 1) {
      return false;
    }
    foreach ($tmpArray[0] as $item) {
      if ($item === $tmpId) {
        switch ($Flag) {
          case 0: // 添加数量 一般$Count为1
            $tmpArray[5][$Id] += $Count;
            break;
          case 1: // 减少数量
            $tmpArray[5][$Id] -= $Count;
            break;
          case 2: // 修改数量
            if ($Count == 0) {
              unset($tmpArray[0][$Id]);
              unset($tmpArray[1][$Id]);
              unset($tmpArray[2][$Id]);
              unset($tmpArray[3][$Id]);
              unset($tmpArray[4][$Id]);
              unset($tmpArray[5][$Id]);
              unset($tmpArray[6][$Id]);
              break;
            } else {
              $tmpArray[5][$Id] = $Count;
              break;
            }
          case 3: // 清空商品
            unset($tmpArray[0][$Id]);
            unset($tmpArray[1][$Id]);
            unset($tmpArray[2][$Id]);
            unset($tmpArray[3][$Id]);
            unset($tmpArray[4][$Id]);
            unset($tmpArray[5][$Id]);
            unset($tmpArray[6][$Id]);
            break;
          default:
            break;
        }
      }
    }
    $this->save();
  }
  /**
   * 清空购物车
   *
   */
  public function RemoveAll() {
    $this->CartArray = array();
    $this->save();
  }
  /**
   * 查看购物车信息
   *
   * @return array 返回一个二维数组
   */
  public function CartView() {
    $cookie = stripslashes($_COOKIE[&#39;CartAPI&#39;]);
    if (!$cookie) return false;
    $tmpUnSerialize = unserialize($cookie);
    return $tmpUnSerialize;
  }
  /**
   * 检查购物车是否有商品
   *
   * @return bool 如果有商品，返回true，否则false
   */
  public function checkCart() {
    $tmpArray = $this->CartView();
    if (count($tmpArray[0]) < 1) {      
      return false;
    }
    return true;
  }
  /**
   * 商品统计
   *
   * @return array 返回一个一维数组 $arr[0]:产品1的总价格 $arr[1:产品2得总价格 $arr[2]:产品3的总价格 $arr[3]:产品的总数量
   */
  public function CountPrice() {
    $tmpArray = $this->CartArray = $this->CartView();
    $outArray = array(); //一维数组
    // 0 是产品1的总价格
    // 1 是产品2的总价格
    // 2 是产品3的总价格
    // 3 是产品的总数量
    $i = 0;
    if (is_array($tmpArray[0])) {
      foreach ($tmpArray[0] as $key=>$val) {
        $outArray[0] += $tmpArray[2][$key] * $tmpArray[5][$key];
        $outArray[1] += $tmpArray[3][$key] * $tmpArray[5][$key];
        $outArray[2] += $tmpArray[4][$key] * $tmpArray[5][$key];
        $outArray[3] += $tmpArray[5][$key];
        $i++;
      }
    }
    return $outArray;
  }
  /**
   * 统计商品数量
   *
   * @return int
   */
  public function CartCount() {
    $tmpArray = $this->CartView();
    $tmpCount = count($tmpArray[0]);
    $this->CartCount = $tmpCount;
    return $tmpCount;
  }
  /**
   * 保存商品 如果不使用构造方法，此方法必须使用
   *
   */
  public function save() {
    $tmpArray = $this->CartArray;
    $tmpSerialize = serialize($tmpArray);
    setcookie("CartAPI",$tmpSerialize,time()+$this->Expires);
  }
  /**
   * 检查购物车商品是否存在
   *
   * @param int $Id
   * @return bool 如果存在 true 否则false
   */
  private function checkItem($Id) {
    $tmpArray = $this->CartArray;
    if (!is_array($tmpArray[0])) return;
    foreach ($tmpArray[0] as $item) {
      if ($item === $Id) return true;
    }
    return false;
  }
}
?>

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