php - using xCache with Zend optimizer together -

I have installed the xCache and Zend adapter at the same time and it gives me a PHP Fatal Error: [Zend Optimizer] Zend Optimizer 3.3 . 3 is incompatible with XCache 1.2.1 Unknown on the line

I have rows in the installation document, in which I should include the zend php.ini file at normal php.ini and say xCache beend Zend Optimizer

My question is how do I include files in php.ini and how can I be sure that xCache runs before Zend Optimizer?

I have participated in this same problem FWID Z Optimizer (except the Zend Platform) The option is not Sikar. I have had success both at the same time. The trick is to change the following line:

  extension = xcache.so  

with it:

  zend_extension = /path/to/xcache.so  

(Note that the zend extension may require the absolute path to your xcache.so library)

Hope It helps.