qq群里有同学问redis如何进行多库选择,用php实现了一下,还望各位多多指点

代码


<?php class MultiRedisConnect { /** * hostname * * @var string */ const REDISHOSTNAME = "127.0.0.1"; /** * port * * @var int */ const REDISPORT = 6379; /** * timeout * * @var int */ const REDISTIMEOUT = 0; /** * password * * @var string */ const REDISPASSWORD = "123456"; /** * 类单例数组 * * @var array */ private static $instance = array(); /** * redis连接句柄 * * @var object */ private $redis; /** * hash的key * * @var int */ private $hash; /** * 私有化构造函数,防止类外实例化 * * @param int $dbnumber */ private function __construct ($dbnumber) { $dbnumber = (int) $dbnumber; $this->hash = $dbnumber; $this->redis = new Redis(); $this->redis->connect(self::REDISHOSTNAME, self::REDISPORT, self::REDISTIMEOUT); $this->redis->auth(self::REDISPASSWORD); $this->redis->select($dbnumber); } private function __clone () {} /** * 获取类单例 * * @param int $dbnumber * @return object */ public static function getRedisInstance ($dbnumber) { $hash = (int) $dbnumber; if (! isset(self::$instance[$hash])) { self::$instance[$hash] = new MultiRedisConnect($dbnumber); } return self::$instance[$hash]; } /** * 获取redis的连接实例 * * @return object */ public function getRedisConnect () { return $this->redis; } /** * 关闭单例时做清理工作 */ public function __destruct () { $key = $this->hash; self::$instances[$key]->redis->close(); self::$instances[$key] = null; } } ?>

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