redis 哈希数据类型简单操作(实现购物车案例)

这里不累赘如何安装redis和php  redis扩展，主要熟悉调用redis哈希数据类型

如图

简单方法操作如下

1：hSet 

2:hGet

4:hDel

5:hGetAll

4:hExists

5:hIncrBy

简单购物车实现

namespaceHome\Controller;

useThink\Controller;

useOrg\Net\Http;

useThink\Cache\Driver\Redis;

classIndexControllerextendsController

{

private$redis_obj=null;

public function__construct()

{

$this->redis_obj=newRedis();

}

/**

*@file:判断购物车是否存在这减商品

*@param$user_id

*@param$goods_id

*/

public functiongoods_is_exist($user_id,$goods_id)

{

$r1=$this->redis_obj->hExists($user_id,$goods_id);

return$r1;

}

/**

*@file:增加购物车商品

*

*/

public functionadd_goods()

{

$user_id= intval($_POST['user_id']) ? intval($_POST['user_id']) :0;

$goods_id= intval($_POST['goods_id']) ? intval($_POST['goods_id']) :0;

$exist=$this->goods_is_exist($user_id,$goods_id);

if(!empty($user_id) &&$goods_id) {

//不存在 增加商品

if(!$exist) {

$add_return=$this->redis_obj->hSet($user_id,$goods_id,1);

if($add_return) {

$this->ajaxReturn(array('code'=>0,'msg'=>'success'));

}else{

$this->ajaxReturn(array('code'=>1,'msg'=>'error'));

}

}elseif($exist) {

//存在的商品增加1

$add_exist_result=$this->redis_obj->hIncrBy($user_id,$goods_id,1);

if($add_exist_result) {

$this->ajaxReturn(array('code'=>0,'msg'=>'success','1'=>$add_exist_result));

}else{

$this->ajaxReturn(array('code'=>1,'msg'=>'error'));

}

}

}

}

//减少购物车的商品

public functionreduce_goods()

{

$user_id= intval($_POST['user_id']) ? intval($_POST['user_id']) :0;

$goods_id= intval($_POST['goods_id']) ? intval($_POST['goods_id']) :0;

if(!empty($user_id) &&$goods_id) {

$exist=$this->goods_is_exist($user_id,$goods_id);

//不存在

if(!$exist) {

$this->ajaxReturn(array('code'=>1,'msg'=>'goods is not exist '));

}elseif($exist) {

$val=$this->redis_obj->hGet($user_id,$goods_id);

if($val==1) {//购物车商品只有一件的时候 减少到0就是删除

$del_result=$this->redis_obj->hDel($user_id,$goods_id);

if($del_result==1) {

$this->ajaxReturn(array('code'=>0,'msg'=>'success','num'=>0));

}

}elseif($val>1) {

$new_value=$this->redis_obj->hIncrBy($user_id,$goods_id,-1);

if($new_value>0) {

$this->ajaxReturn(array('code'=>0,'msg'=>'success','num'=>$new_value));

}else{

$this->ajaxReturn(array('code'=>1,'msg'=>'error'));

}

}

}

}else{

$this->ajaxReturn(array('code'=>1,'msg'=>'param is empty'));

}

}

//移除商品

public functionrm_goods()

{

$user_id= intval($_POST['user_id']) ? intval($_POST['user_id']) :0;

$goods_id= intval($_POST['goods_id']) ? intval($_POST['goods_id']) :0;

if(!empty($user_id) && !empty($goods_id)) {

$arr= explode(',',$goods_id);

array_unshift($arr,$user_id);

$rm_result= call_user_func_array(array($this->redis_obj,"hDel"),$arr);

if($rm_result>=0) {

$this->ajaxReturn(array('code'=>0,'msg'=>'remove success'));

}

}else{

$this->ajaxReturn(array('code'=>1,'msg'=>'param is empty'));

}

}

//购物车列表

public functioncart_list()

{

$user_id= intval($_POST['user_id']) ? intval($_POST['user_id']) :0;

if(!empty($user_id)) {

$goods_list=$this->redis_obj->hGetAll($user_id);

$this->ajaxReturn(array('code'=>0,'list'=>$goods_list));

}else{

$this->ajaxReturn(array('code'=>1,'msg'=>'param is empty'));

}

}

//设置一个商品的数量

public functionedit_goods_num()

{

}

}

作者：MacLin
链接：https://www.jianshu.com/p/c5d77c3b7cce