[Redis专辑][1]ubuntu12.04下安装php-redis的方法和步骤
首次发布路径：phpredis的安装
很久很久没有写博文了，好多博文都没有整理完毕，今天才抽时间整理完这一篇博文，希望能对大家有一定的帮助
首先对redis做个简单的介绍：
Redis 是完全开源免费的，遵守BSD协议，先进的key ? value持久化产品。它通常被称为数据结构服务器，因为值（value）可以是 字符串(String), 哈希(Map), 列表(list), 集合(sets)和 有序集合(sorted sets)等类型。
这是官网的中文翻译，英文的就没必要写上来了，如果想看英文的，可以去redis.io上去看看，中文的可以去redis.cn看看
关于php-redis的安装和使用已经有很多人写过去了，我在这里只是完成一个验证的过程
安装redis
wget http://download.redis.io/redis-stable.tar.gz
tar xvzf redis-stable.tar.gz
cd redis-stable
make
sudo make install (如果是root用户可以不用sudo)
安装完毕后，拷贝下配置文件redis.conf，这里是为了更方便的使用
sudo mkdir /etc/redis/
sudo cp redis.conf /etc/redis/
这时启动下redis看看，启动方法：
redis-server /etc/redis/redis.conf
启动后的界面效果：
geeknimo@bogon:~/Documents/phpredis$ redis-server /etc/redis/redis.conf
[16859] 07 Aug 10:05:30.292 # You requested maxclients of 10000 requiring at least 10032 max file descriptors.
[16859] 07 Aug 10:05:30.293 # Redis can’t set maximum open files to 10032 because of OS error: Operation not permitted.
[16859] 07 Aug 10:05:30.293 # Current maximum open files is 1024. maxclients has been reduced to 4064 to compensate for low ulimit. If you need higher maxclients increase ‘ulimit -n’.
[16859] 07 Aug 10:05:30.293 # Warning: 32 bit instance detected but no memory limit set. Setting 3 GB maxmemory limit with ‘noeviction’ policy now.
_._
_.-“__ ”-._
_.-“ `. `_. ”-._ Redis 2.8.13 (00000000/0) 32 bit
.-“ .-“`. “`\/ _.,_ ”-._
( ‘ , .-` | `, ) Running in stand alone mode
|`-._`-…-` __…-.“-._|’` _.-’| Port: 6379
| `-._ `._ / _.-’ | PID: 16859
`-._ `-._ `-./ _.-’ _.-’
|`-._`-._ `-.__.-’ _.-’_.-’|
| `-._`-._ _.-’_.-’ | http://redis.io
`-._ `-._`-.__.-’_.-’ _.-’
|`-._`-._ `-.__.-’ _.-’_.-’|
| `-._`-._ _.-’_.-’ |
`-._ `-._`-.__.-’_.-’ _.-’
`-._ `-.__.-’ _.-’
`-._ _.-’
`-.__.-’
[16859] 07 Aug 10:05:30.308 # Server started, Redis version 2.8.13
[16859] 07 Aug 10:05:30.308 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add ‘vm.overcommit_memory = 1′ to /etc/sysctl.conf and then reboot or run the command ‘sysctl vm.overcommit_memory=1′ for this to take effect.
[16859] 07 Aug 10:05:30.308 * The server is now ready to accept connections on port 6379
如果想要后台运行，可以执行redis-server /etc/redis/redis.conf & ，或者修改配置文件/etc/redis/redis.conf中的daemonize设置为yes即可。
设置为daemonize后，启动redis-server，并使用redis-cli对redis-server进行连接
redis-cli
连接成功后：
geeknimo@bogon:~/Documents/phpredis$ redis-cli
127.0.0.1:6379>
输入info查看：
127.0.0.1:6379> info
# Server
redis_version:2.8.13
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:7331093c2c819968
redis_mode:standalone
os:Linux 3.2.0-29-generic-pae i686
arch_bits:32
multiplexing_api:epoll
gcc_version:4.6.3
process_id:16890
run_id:660fc790eb501ea29b01b8bb9551f4711ab5f151
tcp_port:6379
uptime_in_seconds:6
uptime_in_days:0
hz:10
lru_clock:14868319
config_file:/etc/redis/redis.conf
# Clients
connected_clients:1
client_longest_output_list:0
client_biggest_input_buf:0
blocked_clients:0
# Memory
used_memory:424880
used_memory_human:414.92K
used_memory_rss:1609728
used_memory_peak:424880
used_memory_peak_human:414.92K
used_memory_lua:22528
mem_fragmentation_ratio:3.79
mem_allocator:jemalloc-3.6.0
# Persistence
loading:0
rdb_changes_since_last_save:0
rdb_bgsave_in_progress:0
rdb_last_save_time:1407377241
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:-1
rdb_current_bgsave_time_sec:-1
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok
# Stats
total_connections_received:1
total_commands_processed:0
instantaneous_ops_per_sec:0
rejected_connections:0
sync_full:0
sync_partial_ok:0
sync_partial_err:0
expired_keys:0
evicted_keys:0
keyspace_hits:0
keyspace_misses:0
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:0
# Replication
role:master
connected_slaves:0
master_repl_offset:0
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0
# CPU
used_cpu_sys:0.00
used_cpu_user:0.00
used_cpu_sys_children:0.00
used_cpu_user_children:0.00
# Keyspace
这就表明redis服务启动成功了，至于优化嘛，后面的文章再说
接下来我们去配置php-redis
首先要安装git,php5,apache2,php5-dev
sudo apt-get install php5 php5-dev apache2
安装需要点时间
在php-redis源代码目录下，执行
git clone https://github.com/nicolasff/phpredis.git
phpize
./configure
make && sudo make install
提示信息：
Installing shared extensions: /usr/lib/php5/20121212+lfs/
共享库在上面提示的路径下
配置php-redis
在/var/www/html下创建index.php，里面写上如下内容：
phpinfo();
?>
并在/etc/php5/mods-available下建立一个redis.ini，内容如下：
extension=redis.so
并在/etc/php5/apache2/conf.d和/etc/php5/cli/conf.d下建立一个与redis.ini的软链接，其中cli这个部分很关键，否则php -m无法得到redis的任何模块信息，即无法成功加载使用phpredis
ln -s /etc/php5/mods-available/redis.ini /etc/php5/cli/conf.d/10-redis.ini
ln -s /etc/php5/mods-available/redis.ini /etc/php5/apache2/conf.d/10-redis.ini
重启apache2服务
sudo service apache2 restart
这里打开ubuntu对应的ip/index.php就可以看到php-redis的配置
| Additional .ini files parsed | /etc/php5/apache2/conf.d/05-opcache.ini, /etc/php5/apache2/conf.d/10-pdo.ini, /etc/php5/apache2/conf.d/10-redis.ini, /etc/php5/apache2/conf.d/20-json.ini, /etc/php5/apache2/conf.d/20-readline.ini |
redis
| Redis Version | 2.2.5 |
session
| Session Support | enabled |
| Registered save handlers | files user redis |
| Registered serializer handlers | php_serialize php php_binary wddx |
有了这些信息后开始进行测试代码
建立testredis.php，内容如下：
$redis = new Redis();
$redis->connect(’127.0.0.1′,6379);
var_dump($redis->info());
?>
这时执行php testredis.php
可以在终端看到对应的内容
也可以在web端看到相应的内容了。
这样就算基本上搭建好了php-redis。
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