Usage example for searchwp_return_orderby_date

gistfile1.php

<?php

function my_searchwp_return_orderby_date( $order_by_date, $engine ) {
	
	// for the Default engine (only!) we want to return search results by date
	if ( 'default' == $engine ) {
		$order_by_date = true;
	}
	
	return $order_by_date;
}

add_filter( 'searchwp_return_orderby_date', 'my_searchwp_return_orderby_date', 10, 2 );