differences between zend engine & zend server, zend optimizer & eAccelerator
I'm confusing by the four products in the title of this thread.
Firstly, re zend engine & zend server, I can see from phpinfo that Zend Engine is now at v2.2.0, and from zend's homepage, zend server is now at v5.5. Is this right, that zend engine is opensource one and zend server is commercial software?
Secondly, re zend optimizer & eAccelerator, if I want to accelerate php code's efficiency in executing, I should use eAccelerator. And if I want to use zend optimizer,I've to use zendguard, zendguard loader and zendoptimizer all together. Is this right?
Thanks very much!