Redis支持的客户端种类非常多，包括C、Java、PHP、Python等，本文主要介绍PHP客户端的安装和使用。
Redis的客户端实际上担负了通过网络协议与Redis Server进行通信的过程，通信的过程必须遵循协议规范，让客户的调用更加符合特定语言的使用习惯。现有PHP客户端：rediska、phpredis、Predis、Redisent。这些可护短中，有纯PHP的实现方案，也有二进制版本的实现方案。
官方提供的PHP客户端列表如下：
predis
phpredis
Rediska
易扩展
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客户端策略和Hash算法定义
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实现方式
纯PHP
PHP扩展（C语言）
纯PHP
测试数据（本地环境下）
18900 SET/sec using 12 bytes for both key and value18300 GET/sec while retrieving the very same values0.210 seconds to fetch 30000 keys using KEYS * .
29000 SET/sec using 12 bytes for both key and value30000 GET/sec while retrieving the very same values0.037 seconds to fetch 30000 keys using “KEYS *””.
测试结果（网络环境下）
3150 SET/sec using 12 bytes for both key and 3150 GET/sec while retrieving the very same 0.212 seconds to fetch 30000 keys using “KEYS *”.
3300 SET/sec using 12 bytes for both key and 3300 GET/sec while retrieving the very same 0.088 seconds to fetch 30000 keys using “KEYS *”.
特性比较
Predis
Predis是一个灵活和特性完备（PHP>5.3）的支持Redis的PHP客户端。当前版本为0.6.3，默认不支持PHP5.2。
Predis安装
phpredis
这是一个二进制版本的PHP客户端，按照的说法，效率要比Predis高。这个版本支持作为Session的Handler。这个扩展的有点在于无需加载任何外部文件，使用比较方便。缺点在于难于扩展，一般的PHP程序员无法对其做出扩展。考虑到Redis正在飞速发展过程中，缺乏扩展的特性还是有些影响的，需要维护过程中注意进行升级更新。
Max下整合XAMPP的安装（需要XAMPP的Dev环境）
1 2 3 4 $ sudo /Applications/XAMPP/xamppfiles/bin/phpize $ sudo MACOSX_DEPLOYMENT_TARGET=10.6 CFLAGS="-arch i386 -arch x86_64 -g -Os -pipe -no-cpp-precomp" CCFLAGS="-arch i386 -arch x86_64 -g -Os -pipe" CXXFLAGS="-arch i386 -arch x86_64 -g -Os -pipe" LDFLAGS="-arch i386 -arch x86_64 -bind_at_load" ./configure --with-apxs=/Applications/XAMPP/xamppfiles/bin/apxs --with-php-config=/Applications/XAMPP/xamppfiles/bin/php-config $ sudo make $ sudo make install
然后修改php.ini，重启服务就可以了。
示例代码
1 2 3 4 5 6 7 8 9 10 11 <?php echo 'phpredis sample:<br />' ;error_reporting(E_ALL); ini_set('display_errors' ,'ON' ); $redis = new Redis();$redis ->connect('127.0.0.1' ,6379 );$redis ->set('first_key_phpredis' , 'Hello world' ););
Rediska
rediska 目前还处于 beta 阶段。他的代码托管在github上，可以方便的获取。另外也提供了PEAR版本，所以获取和安装都非常方便。可以使用PEAR包安装。
本文使用的是 Mac 下的 XAMPP提供的PEAR进行安装。首先添加频道地址：
1 2 3 4 localhost:bin shiqiang$ sudo ./pear channel-discover[pear.geometria-lab.net](http://pear.geometria-lab.net/) Password: Adding Channel "[pear.geometria-lab.net](http://pear.geometria-lab.net/)" succeeded Discovery of channel "[pear.geometria-lab.net](http://pear.geometria-lab.net/)" succeeded
然后进行安装
1 2 3 4 5 6 7 8 9 10 11 12 localhost:bin shiqiang$ sudo ./pear channel-discover[pear.geometria-lab.net](http://pear.geometria-lab.net/) Password: Adding Channel "[pear.geometria-lab.net](http://pear.geometria-lab.net/)" succeeded Discovery of channel "[pear.geometria-lab.net](http://pear.geometria-lab.net/)" succeeded localhost:bin shiqiang$ sudo ./pear install geometria-lab/Rediska-beta Unknown remote channel:[pear.zfcampus.org](http://pear.zfcampus.org/) Did not download optional dependencies: channel://pear.[zfcampus.org/zf](http://zfcampus.org/zf), use --alldeps to download automatically geometria-lab/Rediska can optionally use package "channel://pear.[zfcampus.org/zf](http://zfcampus.org/zf)" (recommended version 1) downloading Rediska-0.5.6.tgz ... Starting to download Rediska-0.5.6.tgz (116,203 bytes) .........................done : 116,203 bytes install ok: channel://pear.[geometria-lab.net/Rediska-0.5.6](http://geometria-lab.net/Rediska-0.5.6)
安装完成后，就可以看到本地的目录环境下已经有了Rediska的PEAR包
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 localhost:XAMPP shiqiang$ sudo find . -name 'Redis*' ./xamppfiles/lib/php/pear/data/Rediska ./xamppfiles/lib/php/pear/doc/Rediska ./xamppfiles/lib/php/pear/Rediska ./xamppfiles/lib/php/pear/Rediska/Options/RediskaInstance.php ./xamppfiles/lib/php/pear/Rediska/Zend/Application/Resource/Rediska.php ./xamppfiles/lib/php/pear/Rediska/Zend/Auth/Adapter/Redis.php ./xamppfiles/lib/php/pear/Rediska/Zend/Cache/Backend/Redis.php ./xamppfiles/lib/php/pear/Rediska/Zend/Log/Writer/Redis.php ./xamppfiles/lib/php/pear/Rediska/Zend/Queue/Adapter/Redis.php ./xamppfiles/lib/php/pear/Rediska/Zend/Session/SaveHandler/Redis.php ./xamppfiles/lib/php/pear/Rediska.php ./xamppfiles/lib/php/pear/test /Rediska ./xamppfiles/lib/php/pear/test /Rediska/tests/library/Rediska ./xamppfiles/lib/php/pear/test /Rediska/tests/library/Rediska/Options/RediskaInstanceTest.php ./xamppfiles/lib/php/pear/test /Rediska/tests/library/RediskaTest.php ./xamppfiles/temp/pear/download/Rediska-0.5.6 ./xamppfiles/temp/pear/download/Rediska-0.5.6/library/Rediska ./xamppfiles/temp/pear/download/Rediska-0.5.6/library/Rediska/Options/RediskaInstance.php ./xamppfiles/temp/pear/download/Rediska-0.5.6/library/Rediska/Zend/Application/Resource/Rediska.php ./xamppfiles/temp/pear/download/Rediska-0.5.6/library/Rediska/Zend/Auth/Adapter/Redis.php ./xamppfiles/temp/pear/download/Rediska-0.5.6/library/Rediska/Zend/Cache/Backend/Redis.php ./xamppfiles/temp/pear/download/Rediska-0.5.6/library/Rediska/Zend/Log/Writer/Redis.php ./xamppfiles/temp/pear/download/Rediska-0.5.6/library/Rediska/Zend/Queue/Adapter/Redis.php ./xamppfiles/temp/pear/download/Rediska-0.5.6/library/Rediska/Zend/Session/SaveHandler/Redis.php ./xamppfiles/temp/pear/download/Rediska-0.5.6/library/Rediska.php ./xamppfiles/temp/pear/download/Rediska-0.5.6/tests/library/Rediska ./xamppfiles/temp/pear/download/Rediska-0.5.6/tests/library/Rediska/Options/RediskaInstanceTest.php ./xamppfiles/temp/pear/download/Rediska-0.5.6/tests/library/RediskaTest.php ./xamppfiles/temp/pear/download/Rediska-0.5.6.tgz
简单使用的示例
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 <?php error_reporting(E_ALL); ini_set('display_errors' ,'ON' ); $options = array ( 'namespace' => 'Application_' , 'servers' => array ( array ('host' => '127.0.0.1' , 'port' => 6379 ), array ('host' => '127.0.0.1' , 'port' => 6380 ) ) ); require_once 'Rediska.php' ;$rediska = new Rediska($options );$key = new Rediska_Key('first_key' );$key ->setValue('first_value' );$get_value = new Rediska_Key('first_key' );print $get_value ;
相对于Memcache的区别
参考资料：http://rediska.geometria-lab.net/ Reids Which PHP Module to use PHP Redis 膜拜Redis redis客户端 predis与phpredis 比较
