[SOLVED] Incompatible file format error message with Zend Optimizer 3.3.9

Incompatible file format error message with Zend Optimizer 3.3.9

On my local machine, I'm trying to deploy PHP code which was obfuscated using Zend Guard under the PHP 5.2.10 engine.

Since my machine had PHP 5.3, I reckoned the code does not run since it was obfuscated using Zend guard under the older PHP engine.

I managed to downgrade my PHP engine to 5.2.10, and also configured php.ini to use the relevant .so file from ZendOptimizer-3.3.9-linux-glibc23-i386.

However, when I try to run my website, I get the following error message:

Fatal error: Incompatible file format: The encoded file has format major ID 0, whereas the Optimizer expects 2 in /var/www/mysite/index.php on line 0

What could I be missing out?

Solution

It turned out that the index.php file was corrupt.

I replaced it with the correct file and then received the message "Invalid license."

I finally had to add a line in the hosts file to resolve the server's domain to localhost, since the Zend license is valid only for particular domains.