Filter the array of results returned by SearchWP

gistfile1.php

<?php

function my_searchwp_results( $results, $attributes ) {
	
	// available $attributes are:
	//
	//    $attributes['terms']          the search terms
	//    $attributes['page']           the current page
	//    $attributes['order']          the results order
	//    $attributes['foundPosts']     the number of found posts
	//    $attributes['maxNumPages']    the total number of pages of results
	//    $attributes['engine']         the engine in use
	
	// modify $results in any way you'd like
	
	return $results;
}

add_filter( 'searchwp_results', 'my_searchwp_results', 10, 2 );