安裝XCache
sudo apt-get install php5-xcache
root@ubuntu:/home/qii# dpkg -l | grep xcachii php5-xcache 1.2.2-5 Fast, stable PHP opcode cacher
xcache配置文件路径是
/etc/php5/conf.d/xcache.ini
编辑php.ini
sudo gedit /etc/php5/apache2/php.ini
把xcache.ini的内容加入到php.ini。 重启apache2
sudo /etc/init.d/apache2 restart
检查安装是否成功
root@ubuntu:/home/qii# php -vPHP 5.2.10-2ubuntu6 with Suhosin-Patch 0.9.7 (cli) (built: Oct 23 2009 16:30:10) Copyright (c) 1997-2009 The PHP GroupZend Engine v2.2.0, Copyright (c) 1998-2009 Zend Technologies with XCache v1.2.2, Copyright (c) 2005-2007, by mOo
还有前面info.php页应该有XCache模块
这里有点奇怪的是，如果不把xcache.ini的内容加入php.ini，apache也能载入XCache，但info.php上没XCache模块。
安装eAccelerator
sudo apt-get install php5-dev
下载 eAccelerator
wget http://bart.eaccelerator.net/source/0.9.6.1/eaccelerator-0.9.6.1.tar.bz2
tar jxvf eaccelerator-0.9.6.1.tar.bz2
cd eaccelerator-0.9.6.1
phpizesudo ./configure -enable-eaccelerator=sharedsudo make
qii@ubuntu:~/tmp/eaccelerator-0.9.6.1$ sudo make installInstalling shared extensions: /usr/lib/php5/20060613+lfs/
修改php.ini文件，安装为Zend扩展，最好放在开头，放到[zend]之前，免的出莫名其妙的问题：
sudo vi /etc/php5/apache2/php.ini
[eaccelerator]zend_extension="/usr/lib/php5/20060613+lfs/eaccelerator.so" eaccelerator.shm_size="16" eaccelerator.cache_dir="/tmp/eaccelerator" eaccelerator.enable="1" eaccelerator.optimizer="1" eaccelerator.check_mtime="1" eaccelerator.debug="0" eaccelerator.filter="" eaccelerator.shm_max="0" eaccelerator.shm_ttl="0" eaccelerator.shm_prune_period="0" eaccelerator.shm_only="0" eaccelerator.compress="1" eaccelerator.compress_level="9" eaccelerator.allowed_admin_path="/var/www/control.php"
