CMailImap::getUnseen

public function getUnseen()
{
	$unseen = 0;

	$tag = $this->sendCommand("SELECT "INBOX"rn");
	$response = $this->readResponse($tag);

	if (mb_strpos($response, $tag.' OK') === false)
		throw new Exception(GetMessage('MAIL_IMAP_ERR_BAD_SERVER'));

	$tag = $this->sendCommand("SEARCH UNSEENrn");
	$response = $this->readResponse($tag);

	if (mb_strpos($response, $tag.' OK') === false)
		throw new Exception(GetMessage('MAIL_IMAP_ERR_BAD_SERVER'));

	if (preg_match('/* SEARCH( [0-9 ]*)?/i', $response, $matches))
	{
		if (isset($matches[1]))
			$unseen = count(preg_split('/s+/', $matches[1], null, PREG_SPLIT_NO_EMPTY));
	}

	return $unseen;
}