Server events are occurring on the server and are written in PHP. There are some basic PHP events that apply to all components:


onCreate        When the component is created

onDestroy        When the component is destroyed

onActivate        When all components are created


Visual components have additional events that can be used


onBeforeRender         To influence the rendering of the component

on AfterRender                To influence the rendered code


But other components might have other events. I.e. a database grid has events to process selected rows, to modify a column under certain circumstances etc.