Add_query_arg + two times the same argument?
Nilambar’s comment solved this for me. “You can pass two values as comma separated in a single parameter events. And later parse value correctly in your page. – Nilambar” I use this to get posts with tag1 OR tag2: echo ‘<a href=”‘.esc_attr(add_query_arg( ‘events’, ‘tag1,tag2′)).'”>Linkname</a>’; And to get all posts with tag1 AND tag2 simply use … Read more