Some other projects, such as Zephir, supply the capability for PHP extensions to be produced in a top-level language and compiled right into native PHP extensions. Such a strategy, rather than writing PHP expansions straight in C, streamlines the development of extensions as well as minimizes the moment needed for programs and also testing. PHP's single-request-per-script-execution design, as well as the reality the Zend Engine is an interpreter, causes inadequacy; consequently, various products have actually been created to assist boost PHP performance.