+ return 'Link: <' . $next . '>; rel="next", <' . $prev . '>; rel="prev"';
+ }
+
+ /**
+ * Set the "link" header with "next" and "prev" links
+ * @return void
+ */
+ protected static function setLinkHeader()
+ {
+ $header = self::getLinkHeader();
+ if (!empty($header)) {
+ header($header);
+ }