memcached 安装

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1. 准备工作
系统环境：CentOS 5.6 x86_64

memcached 下载地址
http://pecl.php.net/package/memcached

libmemcached下载地址
http://libmemcached.org/
http://download.tangent.org/

2. 安装 libmemcached
tar zxvf libmemcached-1.0.2.tar.gz
cd libmemcached-1.0.2
./configure --prefix=/usr/local/libmemcached --with-memcached
   **如果报错：error: tr1/cinttypes: No such file or directory，则执行：
   yum install gcc44 gcc44-c++ libstdc++44-devel
   export CC=/usr/bin/gcc44
   export CXX=/usr/bin/g++44

make
make install

3. 安装memcached扩展
tar zxvf memcached-2.1.0.tgz
cd memcached-2.1.0
/usr/local/php/bin/phpize
./configure --with-php-config=/usr/local/php/bin/php-config --with-libmemcached-dir=/usr/local/libmemcached

make

make install

4.修改php.ini
vi /usr/local/php/etc/php.ini，加入：extension = "memcached.so"
kill -USR2 `cat /usr/local/php/var/php-fpm.pid`

验证是否生效：

/usr/local/php/bin/php -m | grep memcached

5.参考
升级libmemcached及php的memcached之pecl扩展
http://www.niutian365.com/blog/article.asp?id=498

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