PHP 5.5 to be delayed so Optimizer Plus can be built-in
There is still another week of voting left before it becomes official on March 7th but the results are pretty much complete. PHP 5.5 will definitely integrate Zend Optimizer Plus opcache, built right into the distribution.
This is a good thing for the future of PHP but will require some changes for webhosts.
Since even PHP 5.4 is not widely adopted yet, we are talking 2015 for the masses.
But you don’t have to wait for PHP 5.5, you can replace APC, Xcache and eAccelerator immediately with Zend Optimizer Plus via the newly opensourced code and I’ve made a free control panel for it. Works fine on PHP 5.3 and 5.4 and you’ll typically see a minimum 10% performance boost on busy websites over those other opcode caches because of it’s extra optimization passes.