下载Zend Optimizer
http://downloads.zend.com/optimizer/3.3.9/ZendOptimizer-3.3.9-linux-glibc23-i386.tar.gz
tar -xzvf ZendOptimizer-3.3.9-linux-glibc23-i386.tar.gz
cd ZendOptimizer-3.3.9-linux-glibc23-i386
cd data
cd 5_1_x_comp
cp ZendOptimizer.so /usr/lib/php/modules/
修改配置文件vim /etc/php.ini 加入如下两行
zend_optimizer.optimization_level=15 #启动多少优化过程
zend_extension=/usr/lib/php/modules/ZendOptimizer.so
然后重启下httpd服务，用phpinfo()查看，发现了
This program makes use of the Zend Scripting Language Engine:
Zend Engine v2.1.0, Copyright (c) 1998-2006 Zend Technologies
with Zend Optimizer v3.3.3, Copyright (c) 1998-2007, by Zend Technologies
安装eAccelerator
wget http://bart.eaccelerator.net/source/0.9.6/eaccelerator-0.9.6.tar.bz2
#bzip2 -d eaccelerator-0.9.6.tar.bz2
#tar -xvf eaccelerator-0.9.6.tar
#cd eaccelerator-0.9.6
#/usr/bin/phpize
#./configure –enable-eaccelerator=shared –with-php-config=/usr/bin/php-config
#make
#cp modules/eaccelerator.so /usr/lib/php/modules/
vim /etc/php.ini 添加信息如下：
[eaccelerator]
extension=eaccelerator.so
eaccelerator.shm_size=64 ;此处是加速器使用的共享内存的大小
eaccelerator.cache_dir=/tmp/eaccelerator
eaccelerator.enable=1
eaccelerator.optimizer=1
eaccelerator.check_mtime=1
eaccelerator.debug=0
eaccelerator.log_file=/var/log/httpd/eaccelerator.log
eaccelerator.filter=
eaccelerator.shm_max=0
eaccelerator.shm_ttl=0
eaccelerator.shm_prune_period=0
eaccelerator.shm_only=0
修改完php.ini文件后，设置一下缓存文件夹的权限
#mkdir /tmp/eaccelerator
#chmod 777 /tmp/eaccelerator
然后重启httpd服务器，然后查看phpinfo()，在其中有如下记录：
This program makes use of the Zend Scripting Language Engine:
Zend Engine v2.1.0, Copyright (c) 1998-2006 Zend Technologies
with eAccelerator v0.9.6, Copyright (c) 2004-2010 eAccelerator, by eAccelerator
with Zend Optimizer v3.3.3, Copyright (c) 1998-2007, by Zend Technologies
当然也可以通过php -i|grep Zend 和php -i |grep eAccelerator查看是否已安装成功。php版本的查看可以通过php -v查看。