php5.3下加速器ZendGuardLoader安装
Zend Optimizer已经不支持php5.3了，官方给出了ZendGuardLoader代替，安装和原版类似。linux下版本下载：
wget -c http://downloads.zend.com/guard/5.5.0/ZendGuardLoader-php-5.3-linux-glibc23-i386.tar.gz
解压：tar -zxvf ZendGuardLoader-php-5.3-linux-glibc23-x86_64.tar.gz
cd ZendGuardLoader-php-5.3-linux-glibc23-x86_64
mkdir /usr/local/zend
cp php5.3.x/ZendGuardLoader.so/usr/local/zend
zend_extension="/usr/local/zend/ZendGuardLoader.so"
zend_loader.enable=1
zend_loader.disable_licensing=0
zend_loader.obfuscation_level_support=3
zend_loader.license_path=
然后重启php即可。
重启php时可能会出现如下错误： Failed loading /usr/local/zend/ZendGuardLoader.so:/usr/local/zend/ZendGuardLoader.so: cannot restore segment prot after reloc: Permission denied
解决办法：1、setenforce 0 或者vim /etc/sysconfig/selinux SELINUX=disabled
2、chcon -t textrel_shlib_t /usr/local/zend/ZendOptimizer.so
用phpinfo测试下出现如下提示说明安装成功：
This program makes use of the Zend Scripting Language Engine:
Zend Engine v2.3.0, Copyright (c) 1998-2011 Zend Technologies
with Zend Guard Loader v3.3, Copyright (c) 1998-2010, by Zend Technologies
然后再php.ini里面添加下面代码：
页:
[1]