Invoking components programmatically
Rules components are handy tools for allowing site builders to customize their own actions and conditions. If you are writing a module that allows site builders to set custom conditions (or actions), you can let them set these up as Rules components and then evaluate selected components programmatically. This works in a way analogous to invoking events, by using
The first argument is the (machine) name of the component, and any subsequent arguments are variables sent to the component.
// Included somewhere in your custom module. $component_name = $settings['rules_component_name']; // Any variables provided from the component are returned from its evaluation. $result = rules_invoke_component($component_ name, $var_1, $var_2);