memcached结合php以及memcache共享session

//安装php的memcache扩展

一、使用php自带的pecl安装程序
[root@localhost src]# /usr/local/php/bin/pecl install memcache
...
...
...
Build process completed successfully
Installing '/usr/local/php/lib/php/extensions/no-debug-non-zts-20090626/memcache.so'
install ok: channel://pecl.php.net/memcache-2.2.7
configuration option "php_ini" is not set to php.ini location
You should add "extension=memcache.so" to php.ini

[root@localhost src]# cp /usr/local/php/lib/php/extensions/no-debug-non-zts-20090626/memcache.so /usr/local/php/ext
[root@localhost src]# vim /usr/local/php/etc/php.ini
...
...
;extension_dir = "./"     
/*改为extension_dir = "/usr/local/php/lib/php/extensions/no-debug-non-zts-20090626/"*/
//再添加一行
extension = "memcache.so“

//检验，查看是否有memcache
[root@localhost src]# /usr/local/php/bin/php -m   

//检测php是否连接memcache，下载一个已经写好的脚本
[root@localhost src]# curl www.apelearn.com/study_v2/.memcache.txt >1.php 2>/dev/null

//执行
[root@localhost src]# /usr/local/php/bin/php 1.php
//执行成功-- 只有当在php.ini中定义了memcache模块才可以执行此脚本
Get key1 value: This is first value<br>Get key1 value: This is replace value<br>Get key2 value: Array
(
    [0] => aaa
    [1] => bbb
    [2] => ccc
    [3] => ddd
)
<br>Get key1 value: <br>Get key2 value: <br>

二、通过安装包进行安装

//先安装php的memcache扩展

[root@ff ~]# cd /usr/local/src
[root@ff src]# wget http://lishiming.net/data/attachment/forum/memcache-2.2.3.tgz
[root@ff ~]# tar zxvf memcache-2.2.3.tgz
[root@ff ~]# cd memcache-2.2.3
[root@ff memcache-2.2.3]# /usr/local/php/bin/phpize
Configuring for:
PHP Api Version:         20131106
Zend Module Api No:      20131226
Zend Extension Api No:   220131226
[root@ff memcache-2.2.3]# ./configure --with-php-config=/usr/local/php/bin/php-config
[root@ff memcache-2.2.3]# make 
[root@ff memcache-2.2.3]# make install       //此时安装完出现的路径需要记录
Installing shared extensions:     /usr/local/php/lib/php/extensions/no-debug-non-zts-20131226/

[root@ff memcache-2.2.3]# vim /usr/local/php/etc/php.ini
//change --> extension_dir = "./" to -->
extension_dir = "/usr/local/php/lib/php/extensions/no-debug-non-zts-20131226/"
//add
extension = "memcache.so"




//php连接memcached检验
[root@ff memcache-2.2.3]# /usr/local/php/bin/php -m|grep memcache
memcache

//下载测试php脚本
[root@ff memcache-2.2.3]# curl www.apelearn.com/study_v2/.memcache.txt > 1.php 2>/dev/null
[root@ff memcache-2.2.3]# /usr/local/php/bin/php 1.php    //运行
//成功
Get key1 value: This is first value<br>Get key1 value: This is replace value<br>Get key2 value: Array
(
    [0] => aaa
    [1] => bbb
    [2] => ccc
    [3] => ddd
)
<br>Get key1 value: <br>Get key2 value: <br>[root@ff memcache-2.2.3]# 

安装会出现的错误！！！

1. /usr/local/php/bin/phpize 运行不成功。找不到phpize
-->
phpize是属于php-devel的内容，因此在centos中只要运行如下命令：
yum install php-devel 然后就会安装上phpize了。

运行phpize是为了生成./configure文件



2. ./configure  会出现 ：checking for libevent directory... configure: error: libevent is required. You can get it from http://www.monkey.org/~provos/libevent/
If it's already installed, specify its path using --with-libevent=/dir/
-->

 yum install -y libevent-devel

//memcached实现session共享

一、不管在哪种架构中，都能实现的
[root@localhost ~]# vim /usr/local/php/etc/php.ini
//添加
session.save_handler = "memcache"
session.save_path = "tcp://127.0.0.1:11211"  
//如果memcached服务为远程机器，则可将ip改为远程机器的ip

//测试
[root@localhost src]# wget http://study.lishiming.net/.mem_se.txt
[root@localhost src]# mv .mem_se.txt /usr/local/apache2/htdocs/session.php            //因为我们要用curl或浏览器访问此脚本，所以要保证其可以被打开
[root@localhost src]# curl localhost/session.php
//查看是否有显示内容，如果没有，查看已经配置好的网站文件test.conf

1471872176<br><br>1471872176<br><br>3crb4tjhhuqd1o4ao7n73putq6
[root@ff memcache-2.2.3]# telnet 127.0.0.1 11211
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
get 3crb4tjhhuqd1o4ao7n73putq6　　//<br>后的那一串字符
VALUE 3crb4tjhhuqd1o4ao7n73putq6 0 37
TEST|i:1471872176;TEST3|i:1471872176;　　//i后的是第一个<br>前的值
quit //结束
Connection closed by foreign host.

//每一次刷新都会得到一个新的字符串

[root@ff extra]# curl -x127.0.0.1:80 localhost/session.php
1471872300<br><br>1471872300<br><br>hejae0ksknfrunr8fc25mkqu50 
[root@ff extra]# curl -x127.0.0.1:80 localhost/session.php
1471872304<br><br>1471872304<br><br>3oiopcitd291j9ogv5is6o0ik0 
[root@ff extra]# 

//--!!如果添加到php.ini不成功，可以添加到apache或nginx对应的php-fpm的配置文件中，见下方配置

//在httpd.conf或者test.conf对应的虚拟主机中的配置语句{LAMP结构}
php_value session.save_handler "memcache"
php_value session.save_path "tcp://127.0.0.1:11211"

//在php-fpm.conf中的pool中添加  {LNMP结构}
php_value[session.save_handler] = memcache
php_value[session.save_path] = "tcp://127.0.0.1:11211