" . "" . ""; } function wp_wikipedia_excerpt_filter($content){ return preg_replace_callback( "/\[wikipedia\]([^\[]*)\[\/wikipedia\]/", "wp_wikipedia_excerpt_substitute", $content); } add_filter('the_content','wp_wikipedia_excerpt_filter'); add_filter('the_excerpt','wp_wikipedia_excerpt_filter'); add_filter('comment_text', 'wp_wikipedia_excerpt_filter'); ?>