CI框架中redis缓存相关操作文件示例代码

本文实例讲述了CI框架中redis缓存相关操作文件。分享给大家供大家参考，具体如下：
redis缓存类文件位置:
"cisystemlibrariesCachedriversCache_redis.php"
<?php/** * CodeIgniter * * An open source application development framework for PHP 5.2.4 or newer * * NOTICE OF LICENSE * * Licensed under the Open Software License version 3.0 * * This source file is subject to the Open Software License （OSL 3.0） that is * bundled with this package in the files license.txt / license.rst. It is * also available through the world wide web at this URL: * http://opensource.org/licenses/OSL-3.0 * If you did not receive a copy of the license and are unable to obtain it * through the world wide web, please send an email to * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter * @author EllisLab Dev Team * @copyrightCopyright （c） 2008 - 2014, EllisLab, Inc. （http://ellislab.com/） * @license http://opensource.org/licenses/OSL-3.0 Open Software License （OSL 3.0） * @linkhttp://codeigniter.com * @sinceVersion 3.0 * @filesource */defined（"BASEPATH"） OR exit（"No direct script access allowed"）;/** * CodeIgniter Redis Caching Class * * @packageCodeIgniter * @subpackage Libraries * @categoryCore * @author Anton Lindqvist <anton@qvister.se> * @link */class CI_Cache_redis extends CI_Driver{/** * Default config * * @static * @var array */protected static $_default_config = array（/*"socket_type" => "tcp","host" => "127.0.0.1","password" => NULL,"port" => 6379,"timeout" => 0*/）;/** * Redis connection * * @var Redis */protected $_redis;/** * Get cache * * @paramstring like *$key* * @return array（hash） */public function keys（$key）{return $this->_redis->keys（$key）;}/** * Get cache * * @paramstring Cache ID * @return mixed */public function get（$key）{return $this->_redis->get（$key）;}/** * mGet cache * * @paramarrayCache ID Array * @return mixed */public function mget（$keys）{return $this->_redis->mget（$keys）;}/** * Save cache * * @paramstring $id Cache ID * @parammixed$dataData to save * @paramint $ttlTime to live in seconds * @parambool$rawWhether to store the raw value （unused） * @return boolTRUE on success, FALSE on failure */public function save（$id, $data, $ttl = 60, $raw = FALSE）{return （$ttl）? $this->_redis->setex（$id, $ttl, $data）: $this->_redis->set（$id, $data）;}/** * Delete from cache * * @paramstring Cache key * @return bool */public function delete（$key）{return （$this->_redis->delete（$key） === 1）;}/** * hIncrBy a raw value * * @paramstring $id Cache ID * @paramstring $field Cache ID * @paramint $offset Step/value to add * @return mixedNew value on success or FALSE on failure */public function hincrby（$key, $field, $value = 1）{return $this->_redis->hIncrBy（$key, $field, $value）;}/** * hIncrByFloat a raw value * * @paramstring $id Cache ID * @paramstring $field Cache ID * @paramint $offset Step/value to add * @return mixedNew value on success or FALSE on failure */public function hincrbyfloat（$key, $field, $value = 1）{return $this->_redis->hIncrByFloat（$key, $field, $value）;}/** * lpush a raw value * * @paramstring $keyCache ID * @paramstring $value value * @return mixedNew value on success or FALSE on failure */public function lpush（$key, $value）{return $this->_redis->lPush（$key, $value）;} /** * rpush a raw value * * @paramstring $keyCache ID * @paramstring $value value * @return mixedNew value on success or FALSE on failure */public function rpush（$key, $value）{return $this->_redis->rPush（$key, $value）;}/** * rpop a raw value * * @paramstring $keyCache ID * @paramstring $value value * @return mixedNew value on success or FALSE on failure */public function rpop（$key）{return $this->_redis->rPop（$key）;} /** * brpop a raw value * * @paramstring $keyCache ID * @paramstring $ontime 阻塞等待时间 * @return mixedNew value on success or FALSE on failure */public function brpop（$key,$ontime=0）{return $this->_redis->brPop（$key,$ontime）;}/** * lLen a raw value * * @paramstring $keyCache ID * @return mixedValue on success or FALSE on failure */public function llen（$key）{return $this->_redis->lLen（$key）;}/** * Increment a raw value * * @paramstring $id Cache ID * @paramint $offset Step/value to add * @return mixedNew value on success or FALSE on failure */public function increment（$id, $offset = 1）{return $this->_redis->exists（$id）? $this->_redis->incr（$id, $offset）: FALSE;}/** * incrby a raw value * * @paramstring $key Cache ID * @paramint $offset Step/value to add * @return mixedNew value on success or FALSE on failure */public function incrby（$key, $value = 1）{return $this->_redis->incrby（$key, $value）;}/** * set a value expire time * * @paramstring $key Cache ID * @paramint $seconds expire seconds * @return mixedNew value on success or FALSE on failure */public function expire（$key, $seconds）{return $this->_redis->expire（$key, $seconds）;}/** * Increment a raw value * * @paramstring $id Cache ID * @paramint $offset Step/value to add * @return mixedNew value on success or FALSE on failure */public function hset（$alias,$key, $value）{return $this->_redis->hset（$alias,$key, $value）;}/** * Increment a raw value * * @paramstring $id Cache ID * @paramint $offset Step/value to add * @return mixedNew value on success or FALSE on failure */public function hget（$alias,$key）{return $this->_redis->hget（$alias,$key）;}/** * Increment a raw value * * @paramstring $id Cache ID * @return mixedNew value on success or FALSE on failure */public function hkeys（$alias）{return $this->_redis->hkeys（$alias）;}/** * Increment a raw value * * @paramstring $id Cache ID * @paramint $offset Step/value to add * @return mixedNew value on success or FALSE on failure */public function hgetall（$alias）{return $this->_redis->hgetall（$alias）;}/** * Increment a raw value * * @paramstring $id Cache ID * @paramint $offset Step/value to add * @return mixedNew value on success or FALSE on failure */public function hmget（$alias,$key）{return $this->_redis->hmget（$alias,$key）;}/** * del a key value * * @paramstring $id Cache ID * @paramint $offset Step/value to add * @return mixedNew value on success or FALSE on failure */public function hdel（$alias,$key）{return $this->_redis->hdel（$alias,$key）;}/** * del a key value * * @paramstring $id Cache ID * @return mixedNew value on success or FALSE on failure */public function hvals（$alias）{return $this->_redis->hvals（$alias）;}/** * Increment a raw value * * @paramstring $id Cache ID * @paramint $offset Step/value to add * @return mixedNew value on success or FALSE on failure */public function hmset（$alias,$array）{return $this->_redis->hmset（$alias,$array）;}/** * Decrement a raw value * * @paramstring $id Cache ID * @paramint $offset Step/value to reduce by * @return mixedNew value on success or FALSE on failure */public function decrement（$id, $offset = 1）{return $this->_redis->exists（$id）? $this->_redis->decr（$id, $offset）: FALSE;}/** * Clean cache * * @return bool * @see Redis::flushDB（） */public function clean（）{return $this->_redis->flushDB（）;}/** * Get cache driver info * * @paramstring Not supported in Redis. * Only included in order to offer a * consistent cache API. * @return array * @see Redis::info（） */public function cache_info（$type = NULL）{return $this->_redis->info（）;}/** * Get cache metadata * * @paramstring Cache key * @return array */public function get_metadata（$key）{$value = $this->get（$key）;if （$value）{return array（"expire" => time（） + $this->_redis->ttl（$key）,"data" => $value）;}return FALSE;}/** * Check if Redis driver is supported * * @return bool */public function is_supported（）{if （extension_loaded（"redis"））{return $this->_setup_redis（）;}else{log_message（"debug", "The Redis extension must be loaded to use Redis cache."）;return FALSE;}}/** * Setup Redis config and connection * * Loads Redis config file if present. Will halt execution * if a Redis connection can"t be established. * * @return bool * @see Redis::connect（） */protected function _setup_redis（）{$config = array（）;$CI =& get_instance（）;if （$CI->config->load（"redis", TRUE, TRUE））{$config += $CI->config->item（"redis"）;}$config = array_merge（self::$_default_config, $config）;$config = ！empty（$config["redis"]）?$config["redis"]:$config;$this->_redis = new Redis（）;try{if （$config["socket_type"] === "unix"）{$success = $this->_redis->connect（$config["socket"]）;}else // tcp socket{$success = $this->_redis->connect（$config["host"], $config["port"], $config["timeout"]）;}if （ ！ $success）{log_message（"debug", "Cache: Redis connection refused. Check the config."）;return FALSE;}}catch （RedisException $e）{log_message（"debug", "Cache: Redis connection refused （".$e->getMessage（）."）"）;return FALSE;}if （isset（$config["password"]））{$this->_redis->auth（$config["password"]）;}return TRUE;}/** * Class destructor * * Closes the connection to Redis if present. * * @return void */public function __destruct（）{if （$this->_redis）{$this->_redis->close（）;}}}/* End of file Cache_redis.php *//* Location: ./system/libraries/Cache/drivers/Cache_redis.php */
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