VI_ Zend API

Those who know don't talk_

Those who talk don't know_

Sometimes, PHP "as is" simply isn't enough_ Although these cases are rare for the average user, professional applications will soon lead PHP to the edge of its capabilities, in terms of either speed or functionality_ New functionality cannot always be implemented natively due to language restrictions and inconveniences that arise when having to carry around a huge library of default code appended to every single script, so another method needs to be found for overcoming these eventual lacks in PHP_

As soon as this point is reached, it's time to touch the heart of PHP and take a look at its core, the C code that makes PHP go_