Search result highlighting

[purgeru]

function wps_highlight_results($text){
if(is_search()){
$sr = get_query_var('s');
$keys = explode(" ",$sr);
$text = preg_replace('/('.implode('|', $keys) .')/iu', ''.$sr.'', $text);
}
return $text;
}
add_filter('the_excerpt', 'wps_highlight_results');
add_filter('the_title', 'wps_highlight_results');

I added this snippet to the brew.php but it "highlights" also the read more button because of the .the_title tag.

' . __("Read more on","bonestheme") . ' "'.the_title('', '', false).'" »'); ?>