/**
* Clear the page item cache.
*
* @param int $page_number
* @return Paginator
*/
public function clear_page_item_cache($page_number = null)
{
if (!$this->_cache_enabled()) {
return $this;
}
if (null === $page_number) {
foreach (self::$_cache->getIdsMatchingTags(array($this->_get_cache_internal_id())) as $id) {
if (preg_match('|' . self::CACHE_TAG_PREFIX . "(\\d+)_.*|", $id, $page)) {
self::$_cache->remove($this->_get_cache_id($page[1]));
}
}
} else {
$clean_id = $this->_get_cache_id($page_number);
self::$_cache->remove($clean_id);
}
return $this;
}
