Hash data type simple operation (implement shopping cart case)

It's not a liability. How to Http://www.php.cn/php/php-tp-inst install Redis and PHP Redis extensions, primarily familiar with calling Redis hash data types

The simple way to do this

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;

Classindexcontrollerextendscontroller

{

Private$redis_obj=null;

Public Functionconstruct ()

{

$this->redis_obj=newredis ();

}

/**

* @file: Determine whether the shopping cart exists this reduced product

* @param $user _id

* @param $goods _id

*/

Public Functiongoods_is_exist ($user _id, $goods _id)

{

$r 1= $this->redis_obj->hexists ($user _id, $goods _id);

RETURN$R1;

}

/**

* @file: Add Shopping cart Items

*

*/

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 increase in the 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) {

1 Increase in existing goods

$add _exist_result= $this->redis_obj->hincrby ($user _id, $goods _id,1);

if ($add _exist_result) {

$this->ajaxreturn (' Code ' =>0, ' msg ' = ' success ', ' 1 ' = = $add _exist_result));

}else{

$this->ajaxreturn (Array (' Code ' =>1, ' msg ' = ' error '));

}

}

}

}

Reduce the shopping cart items

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) {//Cart item only one item reduced to 0 is deleted

$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 a 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 an item

Public Functionedit_goods_num ()

{

}

}