<?php


class RedisModel
{
    public static $redis;
    private static function _init(){
        if( empty(self::$redis ) ){
            self::$redis = new Redis();
            self::$redis->connect('r-2ze28bdb7389a8a4.redis.rds.aliyuncs.com',6379);//链接
            self::$redis->auth('Zhuaduoduo2017');//密码
        }
        return self::$redis ;
    }
    public static function get( $key ){
        $redis = self::_init();
        return $redis->get($key);
    }

    public static function set( $key, $data){
        $redis = self::_init();
        return $redis->set( $key, $data);
    }

    public static function expire( $key, $time = 60 ){
        $redis = self::_init();
        return $redis->expire( $key, $time );
    }

    public static function setnx( $key, $data){
        $redis = self::_init();
        return $redis->setnx( $key, $data);
    }

    public static function srem( $key, $relation_id){
        $redis = self::_init();
        return $redis->srem( $key, $relation_id);
    }
}