From Joomla! Documentation
The "API15" namespace is an archived namespace. This page contains information for a Joomla! version which is no longer supported. It exists only as a historical reference, it will not be improved and its content may be incomplete and/or contain broken links.
|__construct||Constructor for inputFilter class. Only first parameter is required.|
|getInstance||Returns a reference to an input filter object, only creating it if it doesn't already exist.|
|clean||Method to be called by another php script. Processes for XSS and specified bad code.|
|checkAttribute||Function to determine if contents of an attribute is safe|
jimport( 'joomla.filter.filterinput' );