释放双眼，带上耳机，听听看~！
环境如下：
安装步骤：
1.下载并解压缩redis-3.1.4.tgz：
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2# chmod 777 redis-3.1.4.tgz
3# tar zxvf redis-3.1.4.tgz
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2.进入解压缩之后的目录，进行安装：
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2Configuring for:
3PHP Api Version: 20131106
4Zend Module Api No: 20131226
5Zend Extension Api No: 220131226
6# ./configure
7# make
8# make install
9Installing shared extensions: /usr/local/lib/php/extensions/no-debug-non-zts-20131226/
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3.修改php.ini文件，并重启php-fpm或者apache。本次使用的apache作为web服务器，所以重启httpd服务：
# vim /usr/local/lib/php.ini
增加如下内容：
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3extension=redis.so
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最后，redis扩展已经成功安装：
注意事项：
注意php-redis扩展包需要和php版本兼容。如果php版本较旧，不要使用最新php-redis扩展包。本次安装redis-5.0.0.tgz的扩展包就失败了，make编译时，会报如下错误：
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2In file included from /usr/local/src/redis-5.0.0/redis.c:27:
3/usr/local/src/redis-5.0.0/common.h:12:28: error: zend_smart_str.h: No such file or directory
4/usr/local/src/redis-5.0.0/common.h:13:43: error: ext/standard/php_smart_string.h: No such file or directory
5...
6/usr/local/src/redis-5.0.0/redis.c:1019: error: ‘RedisSock’ has no member named ‘pipeline_cmd’
7/usr/local/src/redis-5.0.0/redis.c:1019: error: ‘RedisSock’ has no member named ‘pipeline_cmd’
8/usr/local/src/redis-5.0.0/redis.c:1019: error: ‘RedisSock’ has no member named ‘mode’
9/usr/local/src/redis-5.0.0/redis.c:1019: error: ‘RedisSock’ has no member named ‘mode’
10/usr/local/src/redis-5.0.0/redis.c:1019: error: ‘RedisSock’ has no member named ‘current’
11/usr/local/src/redis-5.0.0/redis.c:1019: error: ‘RedisSock’ has no member named ‘current’
12/usr/local/src/redis-5.0.0/redis.c:1019: error: ‘RedisSock’ has no member named ‘current’
13/usr/local/src/redis-5.0.0/redis.c:1019: error: ‘RedisSock’ has no member named ‘head’
14/usr/local/src/redis-5.0.0/redis.c:1019: error: ‘RedisSock’ has no member named ‘head’
15/usr/local/src/redis-5.0.0/redis.c:1019: error: ‘RedisSock’ has no member named ‘current’
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