Zend Optimizer is a software instrument, which is needed to execute files protected with Zend Guard - a widespread app which is used to encode PHP 4, PHP 5, PHP 7 and PHP 8 files with the purpose to protect them from tampering with the code or reverse engineering. Zend Guard is used by lots of corporations which make paid script apps, so in case you get such an application for your website, you'll most likely need Zend Optimizer to be present on the server where you will host it. In case you are a programmer, you can use Zend Guard to shield your code and make sure that your site visitors or customers will not be able to change it in any way. Websites that use Zend Optimizer generally perform better since their PHP code is precompiled, thus it's already optimized and will be executed much faster.
