/**
* @param posts $hostPost
* @param posts $visPost
*
* @return float
* @author Panagiotis Vagenas <*****@*****.**>
* @since 150429
*/
protected function rateOnTags(posts $hostPost, posts $visPost)
{
$hostTagsIds = array_keys($hostPost->getTags());
$guestTagsIds = array_keys($visPost->getTags());
if (empty($hostTagsIds) || empty($guestTagsIds)) {
return 0.0;
}
$commonCount = count(array_intersect($hostTagsIds, $guestTagsIds));
return (double) ($commonCount / count($hostTagsIds));
}
