redis简单消息队列

<?php
    $redis = new Redis();
    $redis->connect('127.0.0.1',6379);
   	$redis->flushall();
   	$redis->rpush('mylist','1'); //先进先出
   	$redis->rpush('mylist','2');
   	$redis->lpush('mylist','3'); //加急
   	$redis->rpush('mylist','4');
   	echo $redis->llen('mylist');
   	echo '<hr/>';
   	echo $redis->lpop('mylist');
   	echo $redis->lpop('mylist');
   	echo $redis->lpop('mylist');
   	echo $redis->lpop('mylist');
   	echo '<hr/>';
   	echo $redis->llen('mylist');
?>