php 实现redis发布订阅消息及时通讯

 //发布
 $redis = new Redis();
 $redis->connect('127.0.0.1', 6379);
 $message='新年快乐';
 $ret=$redis->publish('中央广播电台',$message);

 //订阅
 ini_set('default_socket_timeout', -1);  //不超时
 $redis = new Redis();
 $redis->connect('127.0.0.1', 6379);
 $result=$redis->subscribe(array('中央广播电台'), 'callback');
 function callback($instance,$channelName,$message){
     echo $message;
 }