/**
* This function is used to enable or disable a flag on the imap message.
*
* @param string $flag Flagged, Answered, Deleted, Seen, Draft
* @param bool $enable
*
* @throws \InvalidArgumentException
*/
public function setFlag($flag, $enable = true)
{
if (!in_array($flag, $this->flag_types) || $flag == 'recent') {
throw new \InvalidArgumentException('Unable to set invalid flag "' . $flag . '"');
}
$flag = '\\' . ucfirst($flag);
if ($enable) {
$this->imap->setFlag($this->imap_stream, $this->uid, $flag, ST_UID);
} else {
$this->imap->clearFlag($this->imap_stream, $this->uid, $flag, ST_UID);
}
}
