[Plugin: W3 Total Cache] PHP/Plugin Detection Issues

So I detailed all the logs and things in these two Stack Overflow WordPress links
https://wordpress.stackexchange.com/questions/149346/w3-total-cache-cant-really-detect-things
https://wordpress.stackexchange.com/questions/149343/zend-opcache-no-files-cached

The short answer is despite saying in php -v that either memcache, apc, xcache, or opcache is enabled and ready, I can’t get WordPress or W3 Total Cache to use/see them. Zend Opcache never caches any PHP files from wordpress, W3 Total Cache can’t detect any of the apache mod files, and can’t find either memcache, apc, or xcache when I install and enable them.

In addition, if I have Zend Opcache enabled, and I activate Woocommerce, it throws 500 errors for every page. I think that’s because it can’t find any of the php files in the opcache(and they aren’t there according to the viewer). Either disabling the cache and running woocommerce or enabling the cache and disabling woocommerce returns the site to normalcy.

I’m flummoxed, and I’d really like to get this resolved. I’ve been stuck on this for the last couple days. I’m running CentOs 6.5 with Apache and PHP installed as an Apache addon. As far as I know a pretty standard setup. I’ve actually installed all the modules for Apache that are not detected, but I haven’t configured any of the non standard ones. Thank you for any help you can provide!