PHP5.5.25 安装libmemcached扩展

一、安装分两步

• 安装libmemcached，目标是so和header文件
• 安装memcachedphp extensions

二、安装libmemcached

wget https://launchpad.net/libmemcached/1.0/0.53/+download/libmemcached-0.53.tar.gz  
tar xvfz libmemcached-0.53.tar.gz  
cd libmemcached-0.53  
./configure --prefix=/usr/local/libmemcached
make && make install  

三、安装PHP扩展

wget http://pecl.php.net/get/memcached-2.0.0.tgz  
tar zvxf memcached-2.0.0.tgz  
cd memcached-2.0.0/  
./configure --enable-memcached --with-php-config=/usr/local/php/bin/php-config --with-libmemcached-dir=/usr/local/libmemcached/
make && make install  

• make install 是 把memcached.so 安装到/usr/local/php/lib/php/extensions/no-debug-zts-20121212/，这个目录随着php的版本不同而不同

四、最后一步

• 修改php.ini，加上 extension = "/usr/local/php/lib/php/extensions/no-debug-zts-20121212/memcached.so"