php安装对memcached的支持

二、php安装对memcached的支持  
php有两个版本的memcached客户端 

1.memcached 
这个是新版的客户端基于libmemcached，所以必须要安装libmemcached 

先安装libmemcached 
下载地址：wget http://launchpadlibrarian.net/66527034/libmemcached-0.48.tar.gz

 [root@localhost tools]# tar zxvf libmemcached-0.26.tar.gz
 [root@localhost tools]# cd libmemcached-0.26
 [root@localhost libmemcached-0.26]# ./configure --prefix=/usr/local/libmemcached/ --with-libmemcached-dir=/usr/local/libmemcached/
 [root@localhost libmemcached-0.26]# make
 [root@localhost libmemcached-0.26]# make install

安装php memcached客户端 
下载地址：http://pecl.php.net/get/memcached 

 [root@localhost tools]# tar zxvf memcached-0.1.4.tgz
 [root@localhost tools]# cd memcached-0.1.4
 [root@localhost memcached-0.1.4]# ./configure --with-php-config=/usr/local/php/bin/php-config --with-libmemcached-dir=/usr/local/libmemcached/
 [root@localhost memcached-0.1.4]# make
 [root@localhost memcached-0.1.4]# make install

修改php.ini添加extension = "memcached.so"就可以了。 

如果出现错误

 checking for libmemcached location... configure: error: memcached support requires libmemcached. Use --with-libmemcached-dir=<DIR> to specify the prefix where libmemcached headers and library are located

请先用whereis libmemcached找到路径，然后添加选项--with-libmemcached-dir=libmemcached路径 

2.memcache 
下载地址：http://pecl.php.net/get/memcache 

 [root@localhost tools]# tar zxvf memcache-3.0.3.tgz
 [root@localhost tools]# cd memcache-3.0.3
 [root@localhost tools]# /usr/local/php/bin/phpize
 [root@localhost tools]# ./configure --with-php-config=/usr/local/php/bin/php-config
 [root@localhost tools]# make
 [root@localhost tools]# make install

修改php.ini添加extension = "memcache.so"就可以了。 

提示：如果php找不到so文件，请设置extension_dir。