addToFavorite

public function addToFavorite($parameters = array('AFFECT_CHILDREN' => true))

This method adds the task to Favorites

Parameter	Description
PARAMETERS	Array that contains the AFFECT_CHILDREN key. If the key value is true, then subtasks of this task will be added to the Favorites as well. If false, then they will not be included.

This method returns true if adding was successful, otherwise returns false.

   // adding to favorites  
   $task = new CTaskItem(10, $GLOBALS['USER']->GetId()); 
   $task->addToFavorite();