/**
* Find which subscriber this message was sent to
* @param string $text
* @return bool|Subscriber
*/
private function findSubscriber($text)
{
$subscriber = false;
$subscriber_id = '';
preg_match('/X-ListMember: (.*)\\R/iU', $text, $match);
if (is_array($match) && isset($match[1])) {
$subscriber_id = trim($match[1]);
} else {
# older version use X-User
preg_match('/X-User: (.*)\\R/iU', $text, $match);
if (is_array($match) && isset($match[1])) {
$subscriber_id = trim($match[1]);
}
}
if ($subscriber_id != '') {
# some versions used the email to identify the subscribers, some the userid and others the uniqid
# use backward compatible way to find subscriber
if (strpos($subscriber_id, '@') !== false) {
$subscriber = Subscriber::getSubscriberByEmailAddress($subscriber_id);
} elseif (preg_match('/^\\d$/', $subscriber_id)) {
$subscriber = Subscriber::getSubscriber($subscriber_id);
} elseif (!empty($subscriber_id)) {
$subscriber = Subscriber::getSubscriberByUniqueId($subscriber_id);
}
}
if ($subscriber === false) {
### if we didn't find any, parse anything looking like an email address and check if it's a subscriber.
## this is probably fairly time consuming, but as the process is only done once every so often
## that should not be too bad
preg_match_all('/[\\S]+@[\\S\\.]+/', $text, $regs);
foreach ($regs[0] as $match) {
$subscriberObj = Subscriber::getSubscriberByEmailAddress(Util::cleanEmail($match));
if ($subscriberObj !== false) {
return $subscriberObj;
}
}
}
return $subscriber;
}