<?php

class Ranks{

	const PREFIX = 'zhengban';

	protected $redis = '';

	/*

	初始化

	 */

	public function __construct(redis $redis){

		$this->redis = $redis;

	}

	/*

	添加到排行榜

	 */

	public function addScores($gameid,$score){

		$key = self::PREFIX . date('Ymd');

		return $this->redis->zIncrBy($key, $score, $gameid);

	}

	/*

	获取特定一天的排行榜数据

	返回一维数组，key是gameid,value是score

	 */

	public function getOneDayRankings($date,$start,$end){

		$key = self::PREFIX . $date;

        return $this->redis->zRevRange($key, $start, $end, true);

	}

	/*

	获取几天数据的排行榜

	 */

	public function getMultiDaysRankings($dates,$start,$end){

		$outKey = null;

		foreach ($dates as $v){

			$keys[] = self::PREFIX . $v;

		}

        //$weights = array_fill(0, count($keys), 1);

        //$this->redis->zUnion($outKey, $keys,$weights);

        $this->redis->zUnion($outKey, $keys);

        return $this->redis->zRevRange($outKey, $start, $end, true);

	}

}

	$host = "192.168.1.114";

	$port = 6379;

	$pwd = "123456";

	$redis = new Redis();

	if ($redis->connect($host, $port) == false) {

		exit('{"result":"-1"}');   //连接失败

	}

	/* AUTH的密码 */

	if ($redis->auth($pwd) == false) {

		exit('{"result":"-2"}');   //认证失败

	}

	$Ranks = new Ranks($redis);

	//$Ranks->addScores(12,1);

	$order = $Ranks->getMultiDaysRankings(array(20151021,20151022,20151020),0,9);

	var_dump($order);