The Zend Server component and PHP directives are named configuration entries which hold a value and are used to configure the behavior of the Zend Components and the PHP extensions loaded in your environment.
The Zend Component directives are displayed on the Configurations | Components page, and also include daemon directives.
Only applicable for Zend Deployment, Zend Java Bridge, Zend Job Queue and Zend Monitor.
The PHP extension directives are displayed on the Configurations | PHP page, and are grouped according to the PHP extension they are associated with. Unassociated directives are grouped into additional directive groupsadditional directive groups.
Some PHP extensions do not have configuration directives. If you select such extension , a "No directives are available for this extension" message is displayed.