wget http://downloads.zend.com/optimizer/3.2.8/ZendOptimizer-3.2.8-linux-glibc21-i386.tar.gz
tar zxvf ZendOptimizer-3.2.8-linux-glibc21-i386.tar.gz
cd ZendOptimizer-3.2.8-linux-glibc21-i386
./install.sh