php memcached扩展 - 技术笔记

注意: 本次讲解的系统为linux系统为ubuntu14.0,linux系统大同小异

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安装memcache服务端(memcached)

可以到memcached官网下载 or 直接命令运行下载最新版本:

wget http://memcached.org/latest

安装memcache服务端前,需要先安装libevent

sudo apt-get install libevent-dev

编译安装

mkdir /usr/local/memcache
tar -zxvf memcache.tar.gz
cd memcached-1.4.25
./configure --prefix=/usr/local/memcached/
make && make install

启动memcached

cd /usr/local/memcached
./bin/memcached  -d -m 1024 -u root -l 127.0.0.1 -p 11211 -P /tmp/memcached.pid

检测是否已经启动

ps -aux | grep memcache

安装memcached客户端(php memcached扩展)

这个扩展需要» libmemcached客户端库（版本大于等于 1.0.0）。链接memcached服务器时使用SASL认证，需要libmemcached 必须开启SASL选项。先安装libmemcached

wget https://launchpadlibrarian.net/165454254/libmemcached-1.0.18.tar.gz
tar -zxvf libmemcached-1.0.18.tar.gz
cd libmemcached-1.0.18/
./configure --prefix=/usr/local/libmemcached
make && make install

由于我之前已经编译安装过php了,所以现在只需要在不重新安装php的情况下添加memcache扩展

可以到pecl官网下载,or 运行:

wget http://pecl.php.net/get/memcached-2.2.0.tgz

tar -axvf memcached-2.2.0.tgz
cd memcached-2.2.0/
/usr/local/php5/bin/phpize
--with-php-config=/usr/local/php5/bin/php-config --with-libmemcached-dir=/usr/local/libmemcached
make && make install

安装成功后会提示

----------------------------------------------------------------------
Libraries have been installed in:
   /home/hiho/Downloads/memcached-2.2.0/modules

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable
     during execution
   - add LIBDIR to the `LD_RUN_PATH' environment variable
     during linking
   - use the `-Wl,--rpath -Wl,LIBDIR' linker flag
   - have your system administrator add LIBDIR to `/etc/ld.so.conf'

See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------

Build complete.
Don't forget to run 'make test'.

Installing shared extensions:     /usr/local/php5/lib/php/extensions/no-debug-non-zts-20121212/

复制编译好的扩展文件到你php的扩展库目录

cp /usr/local/php5/lib/php/extensions/no-debug-non-zts-20121212/memcached.so /usr/local/php5/ext/

修改php.ini文件添加extension = memcached.so

重启fpm OK

php memcached使用例子

$mem  = new Memcached();

$mem->addServer('127.0.0.1',11211);
if( $mem->add("mystr","this is a memcache test!",3600)){
    echo  '原始数据缓存成功!';
}else{
    echo '数据已存在：'.$mem->get("mystr");
}

详细请参考php memcached官方文档

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2015年5月18日 08:09:12 初稿