Imap::getNew

public function getNew($mailbox, $uidMin, $uidMax, &$error)
{
	$error = null;

	if (!($uidMin <= $uidMax))
	{
		return false;
	}

	if (!$this->select($mailbox, $error))
	{
		return false;
	}

	$new = 0;

	if (!($this->sessMailbox['exists'] > 0))
	{
		return $new;
	}

	if ($uidMax < 1)
	{
		return $this->sessMailbox['exists'];
	}

	$range = $this->getUidRange($mailbox, $error);

	if (empty($range))
	{
		return false;
	}

	[$min, $max] = $range;

	$searches = array();

	if ($uidMin > 1 && $uidMin > $min)
	{
		$searches[] = sprintf('%u:%u', $min, $uidMin - 1);
	}

	if ($uidMax > 0 && $uidMax < $max)
	{
		$searches[] = sprintf('%u:%u', $uidMax + 1, $max);
	}

	if (!empty($searches))
	{
		$response = $this->executeCommand(sprintf('SEARCH UID %s', join(',', $searches)), $error);

		if ($error)
		{
			$error = $error == Imap::ERR_COMMAND_REJECTED ? null : $error;
			$error = $this->errorMessage(array(Imap::ERR_SEARCH, $error), $response);

			return false;
		}

		$regex = '/^ * x20 SEARCH x20 ( .+ ) rn $ /ix';
		foreach ($this->getUntagged($regex, true) as $item)
		{
			$new = preg_match_all('/d+/', $item[1][1]);
		}
	}

	return $new;
}