Linux指令下载：

wget http://memcached.googlecode.com/files/memcached-1.4.15.tar.gz

wget http://www.monkey.org/~provos/libevent-2.0.20-stable.tar.gz

wget http://pecl.php.net/get/memcache-3.0.7.tgz

上面是安装。php  Memcache 环境的必须的3个包

1、先安装libevent

tar zxvf libevent-2.0.20-stable.tar.gz 
cd libevent-2.0.20-stable 
./configure --prefix=/usr 
make && make install

whereis libevent 查看软件安装路径

检测一下查看是否安装:

ls -al /usr/lib | grep libevent
#显示
libevent.so -> libevent-2.0.so.5.1.2

2.安装Memcache

tar -zxvf memcached-1.4.0.tar.gz
cd memcached-1.4.0.tar.gz
./configure --with-libevent=/usr/
make && make install

检测是否成功安装

ls -al /usr/local/bin/mem*
#显示
/usr/local/bin/memcached


memcached -d -u root
#无提证明开启成功

3.安装Memcache的PHP扩展

tar vxzf memcache-3.0.7.tgz
cd memcache-3.0.7
/usr/local/php/bin/phpize
./configure --enable-memcache --with-php-config=/usr/local/php/bin/php-config --with-zlib-dir
make && make install

添加一行来载入memcache扩展：

在php.INI  添加

extension=memcache.so

测试：

<?php
$mem = new Memcache;   
$mem->connect("127.0.0.1", 11211);   
$mem->set('key','This is key!<br>', 0, 60);   
echo "设置缓存成功<br>";   
$val = $mem->get('key');   
echo $val;