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:

'ci\\system\\libraries\\Cache\\drivers\\Cache_redis.php'

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<?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

* @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)

* @link http://codeigniter.com

* @since Version 3.0

* @filesource

*/

defined('BASEPATH') OR exit('No direct script access allowed');

/**

* CodeIgniter Redis Caching Class

*

* @package CodeIgniter

* @subpackage Libraries

* @category Core

* @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

*

* @param string like *$key*

* @return array(hash)

*/

public function keys($key)

{

return $this->_redis->keys($key);

}

/**

* Get cache

*

* @param string Cache ID

* @return mixed

*/

public function get($key)

{

return $this->_redis->get($key);

}

/**

* mGet cache

*

* @param array Cache ID Array

* @return mixed

*/

public function mget($keys)

{

return $this->_redis->mget($keys);

}

/**

* Save cache

*

* @param string $id Cache ID

* @param mixed $data Data to save

* @param int $ttl Time to live in seconds

* @param bool $raw Whether to store the raw value (unused)

* @return bool TRUE 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

*

* @param string Cache key

* @return bool

*/

public function delete($key)

{

return ($this->_redis->delete($key) === 1);

}

/**

* hIncrBy a raw value

*

* @param string $id Cache ID

* @param string $field Cache ID

* @param int $offset Step/value to add

* @return mixed New 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

*

* @param string $id Cache ID

* @param string $field Cache ID

* @param int $offset Step/value to add

* @return mixed New 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

*

* @param string $key Cache ID

* @param string $value value

* @return mixed New value on success or FALSE on failure

*/

public function lpush($key, $value)

{

return $this->_redis->lPush($key, $value);

}

/**

* rpush a raw value

*

* @param string $key Cache ID

* @param string $value value

* @return mixed New value on success or FALSE on failure

*/

public function rpush($key, $value)

{

return $this->_redis->rPush($key, $value);

}

/**

* rpop a raw value

*

* @param string $key Cache ID

* @param string $value value

* @return mixed New value on success or FALSE on failure

*/

public function rpop($key)

{

return $this->_redis->rPop($key);

}

/**

* brpop a raw value

*

* @param string $key Cache ID

* @param string $ontime 阻塞等待时间

* @return mixed New value on success or FALSE on failure

*/

public function brpop($key,$ontime=0)

{

return $this->_redis->brPop($key,$ontime);

}

/**

* lLen a raw value

*

* @param string $key Cache ID

* @return mixed Value on success or FALSE on failure

*/

public function llen($key)

{

return $this->_redis->lLen($key);

}

/**

* Increment a raw value

*

* @param string $id Cache ID

* @param int $offset Step/value to add

* @return mixed New 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

*

* @param string $key Cache ID

* @param int $offset Step/value to add

* @return mixed New value on success or FALSE on failure

*/

public function incrby($key, $value = 1)

{

return $this->_redis->incrby($key, $value);

}

/**

* set a value expire time

*

* @param string $key Cache ID

* @param int $seconds expire seconds

* @return mixed New value on success or FALSE on failure

*/

public function expire($key, $seconds)

{

return $this->_redis->expire($key, $seconds);

}

/**

* Increment a raw value

*

* @param string $id Cache ID

* @param int $offset Step/value to add

* @return mixed New value on success or FALSE on failure

*/

public function hset($alias,$key, $value)

{

return $this->_redis->hset($alias,$key, $value);

}

/**

* Increment a raw value

*

* @param string $id Cache ID

* @param int $offset Step/value to add

* @return mixed New value on success or FALSE on failure

*/

public function hget($alias,$key)

{

return $this->_redis->hget($alias,$key);

}

/**

* Increment a raw value

*

* @param string $id Cache ID

* @return mixed New value on success or FALSE on failure

*/

public function hkeys($alias)

{

return $this->_redis->hkeys($alias);

}

/**

* Increment a raw value

*

* @param string $id Cache ID

* @param int $offset Step/value to add

* @return mixed New value on success or FALSE on failure

*/

public function hgetall($alias)

{

return $this->_redis->hgetall($alias);

}

/**

* Increment a raw value

*

* @param string $id Cache ID

* @param int $offset Step/value to add

* @return mixed New value on success or FALSE on failure

*/

public function hmget($alias,$key)

{

return $this->_redis->hmget($alias,$key);

}

/**

* del a key value

*

* @param string $id Cache ID

* @param int $offset Step/value to add

* @return mixed New value on success or FALSE on failure

*/

public function hdel($alias,$key)

{

return $this->_redis->hdel($alias,$key);

}

/**

* del a key value

*

* @param string $id Cache ID

* @return mixed New value on success or FALSE on failure

*/

public function hvals($alias)

{

return $this->_redis->hvals($alias);

}

/**

* Increment a raw value

*

* @param string $id Cache ID

* @param int $offset Step/value to add

* @return mixed New value on success or FALSE on failure

*/

public function hmset($alias,$array)

{

return $this->_redis->hmset($alias,$array);

}

/**

* Decrement a raw value

*

* @param string $id Cache ID

* @param int $offset Step/value to reduce by

* @return mixed New 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

*

* @param string 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

*

* @param string 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()

希望本文所述对大家基于CodeIgniter框架的PHP程序设计有所帮助。

CI框架中redis缓存相关操作文件示例代码

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