What is Zend Optimizer and how do I set it up?

The Zend Optimizer is a freeware tool for parsing pre-compiled PHP files. These PHP
files must first have been compiled with the Zend Encoder which however is not a
freeware. The advantage of pre-compiled files is that they do not need to be parsed
repeatedly and therefore execute faster.

Please note
You can either use FTP or SSH to install Zend Optimizer. But only certain
packages have SSH (Check FAQ What packages support SSH Access?
Follow instructions from FAQ How to connect using SSH

1. Download the Zend Optimizer from http://www.zend.com/store/products/zend-optimizer.php (for Linux glibc 2.1)
2. Unzip the files locally on your computer. (tar -xvzf "the tar file")
3. Go to the directory where the Zend Optimizer has been unpacked. Go to "data"
directory. Here you can see various directories named according to PHP versions, e.g.
4_4_1_comp. Go the the directory of your choice. The important file is
"ZendOptimizer.so"
5. Upload this file into a directory of your choice within your webspace.
6. Change the php.ini file to include the following text:
zend_optimizer.optimization_level=15
zend_extension=/homepages/12/d1234567/htdocs/ZendOptimizer.so

Note that you will need to use your path name "/homepages/xx/dxxxxxxx/htdocs/ to
your webspace. You can find out the path name either via your 1&1 Control Panel,
under "Domains" or from the shell itself by entering the command "pwd"

Note: On Managed Server, please follow this instruction:
Login to Control Panel -> Administration -> Server Administration ->
Advanced Configuration -> Edit. Choose "Off" for PHP module.

Note: 4_4_x is found in "ZendOptimizer-2.5.10a" version and above.

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