Simple operation of hash data type (implementation of shopping cart case)

How about not being too cumbersome hereInstallationredis and php redis extension, mainly Familiar with calling redis hashData type

As shown in the figure

Simple method The operation is as follows

1:hSet

2:hGet

##4:hDel

5:hGetAll

##4:hExists

# #5:hIncrBy

##Simple

Shopping Cart Implementation



namespaceHome\Controller;

useThink\Controller;

useOrg\Net\Http;

useThink\

Cache

\Driver\Redis;

class

IndexControllerextendsController

{private$redis_obj =null;

public functionconstruct()

{$this->redis_obj=

new

Redis();

}

/***@

file

: Determine whether the reduced product exists in the shopping cart

*@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:Add items to shopping cart

*

*/

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) {

//There is no added product

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) {

//The existing product is increased by 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'));

}

}

}

}

//Reduce the items in the shopping cart

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);

//Does not exist

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) {//There is only one item in the shopping cart When reduced to 0, it is Delete

$del_result=$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'));

}

}

//Remove product

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'));

}

}

// Shopping cart list

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'));

}

}

//Set the quantity of a product

public functionedit_goods_num()

{

}

}

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