使用PHP+Redis实现延迟任务,实现自动取消订单功能(2)

<?php
require_once 'Redis2.class.php';
$redis = new \Redis2('127.0.0.1','6379','','15');
$order_sn = 'SN'.time().'T'.rand(10000000,99999999);
$use_mysql = 1; //是否使用数据库，1使用，2不使用
if($use_mysql == 1){
 /*
 * //数据表
 * CREATE TABLE `order` (
 * `ordersn` varchar(255) NOT NULL DEFAULT '',
 * `status` varchar(255) NOT NULL DEFAULT '',
 * `createtime` varchar(255) NOT NULL DEFAULT '',
 * `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
 * PRIMARY KEY (`id`)
 * ) ENGINE=InnoDB AUTO_INCREMENT=27 DEFAULT CHARSET=utf8mb4;
 */
 require_once 'db.class.php';
 $mysql = new \mysql();
 $mysql->connect();
 $data = ['ordersn'=>$order_sn,'status'=>0,'createtime'=>date('Y-m-d H:i:s',time())];
 $mysql->insert('order',$data);
}
$list = [$order_sn,$use_mysql];
$key = implode(':',$list);
$redis->setex($key,3,'redis延迟任务'); //3秒后回调
$test_del = false; //测试删除缓存后是否会有过期回调。结果：没有回调
if($test_del == true){
 //sleep(1);
 $redis->delete($order_sn);
}
echo $order_sn;
/*
 * 测试其他key会不会有回调，结果：有回调
 * $k = 'test';
 * $redis2->set($k,'100');
 * $redis2->expire($k,10);
 *
*/

<?php
ini_set('default_socket_timeout', -1); //不超时
require_once 'Redis2.class.php';
$redis_db = '15';
$redis = new \Redis2('127.0.0.1','6379','',$redis_db);
// 解决Redis客户端订阅时候超时情况
$redis->setOption();
//当key过期的时候就看到通知，订阅的key __keyevent@<db>__:expired 这个格式是固定的，db代表的是数据库的编号，由于订阅开启之后这个库的所有key过期时间都会被推送过来，所以最好单独使用一个数据库来进行隔离
$redis->psubscribe(array('__keyevent@'.$redis_db.'__:expired'), 'keyCallback');
// 回调函数,这里写处理逻辑
function keyCallback($redis, $pattern, $channel, $msg)
{
 echo PHP_EOL;
 echo "Pattern: $pattern\n";
 echo "Channel: $channel\n";
 echo "Payload: $msg\n\n";
 $list = explode(':',$msg);
 $order_sn = isset($list[0])?$list[0]:'0';
 $use_mysql = isset($list[1])?$list[1]:'0';
 if($use_mysql == 1){
 require_once 'db.class.php';
 $mysql = new \mysql();
 $mysql->connect();
 $where = "ordersn = '".$order_sn."'";
 $mysql->select('order','',$where);
 $finds=$mysql->fetchAll();
 print_r($finds);
 if(isset($finds[0]['status']) && $finds[0]['status']==0){
 $data = array('status' => 3);
 $where = " id = ".$finds[0]['id'];
 $mysql->update('order',$data,$where);
 }
 }
}
//或者
/*$redis->psubscribe(array('__keyevent@'.$redis_db.'__:expired'), function ($redis, $pattern, $channel, $msg){
 echo PHP_EOL;
 echo "Pattern: $pattern\n";
 echo "Channel: $channel\n";
 echo "Payload: $msg\n\n";
 //................
});*/

<?php
class Redis2
{
 private $redis;
 public function __construct($host = '127.0.0.1', $port = '6379',$password = '',$db = '15')
 {
 $this->redis = new Redis();
 $this->redis->connect($host, $port); //连接Redis
 $this->redis->auth($password); //密码验证
 $this->redis->select($db); //选择数据库
 }
 public function setex($key, $time, $val)
 {
 return $this->redis->setex($key, $time, $val);
 }
 public function set($key, $val)
 {
 return $this->redis->set($key, $val);
 }
 public function get($key)
 {
 return $this->redis->get($key);
 }
 public function expire($key = null, $time = 0)
 {
 return $this->redis->expire($key, $time);
 }
 public function psubscribe($patterns = array(), $callback)
 {
 $this->redis->psubscribe($patterns, $callback);
 }
 public function setOption()
 {
 $this->redis->setOption(\Redis::OPT_READ_TIMEOUT, -1);
 }
 public function lRange($key,$start,$end)
 {
 return $this->redis->lRange($key,$start,$end);
 }
 public function lPush($key, $value1, $value2 = null, $valueN = null ){
 return $this->redis->lPush($key, $value1, $value2 = null, $valueN = null );
 }
 public function delete($key1, $key2 = null, $key3 = null)
 {
 return $this->redis->delete($key1, $key2 = null, $key3 = null);
 }
}