I’ve built a Zend OPcache package for PHP 5.4 that comes with Debian Wheezy due to the fact that there just isn’t one out there. The package will plonk the precompiled PHP extension (amd64) into the right place, and put down a basic config.
What you need to know
Built with Zend OPcache 7.0.3 on Debian Wheezy (7.0).
The module lives at /usr/lib/php5/20100525/opcache.so
The config is in /etc/php5/mods-available/
A symlink in /etc/php5/conf.d/20-opcache.ini points to the above config file.
Hope you find this handy, and let me know if you find any bugs with the package.