redis 哈希数据类型简单操作(实现购物车案例)

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概述

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

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

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namespaceHomeController;

useThinkController;

useOrgNetHttp;

useThinkCacheDriverRedis;

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
;

}<br>

/**

*@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
function
edit_goods_num()

　　{

 

　　}

}