Removes the Tweets which does not contain the specified hash tags from Tuitter_Tweets.
Tuitter::load('Filter/HashTag.php'); $filter = new Tuitter_Filter_HashTag('tag1', 'tag2');$tl = $tuitter->getHomeTL(); $tl->filter($filter); // Left only Tweets which contain 'tag1' or 'tag2'. foreach($tl as $tweet){ // : }