Pop\Mail\Mail::getEmailFromFile PHP Method

    protected function getEmailFromFile($filename)
    {
        $contents = file_get_contents($filename);
        $email = array('to' => null, 'subject' => null, 'headers' => null, 'message' => null);
        $headers = substr($contents, 0, strpos($contents, $this->message->getEol() . $this->message->getEol()));
        $email['message'] = trim(str_replace($headers, '', $contents));
        $email['headers'] = trim($headers) . $this->message->getEol() . $this->message->getEol();
        if (strpos($email['headers'], 'Subject:') === false) {
            throw new Exception("Error: There is no subject in the email file '" . $filename . "'.");
        }
        if (strpos($email['headers'], 'To:') === false) {
            throw new Exception("Error: There is no recipient in the email file '" . $filename . "'.");
        }
        $subject = substr($contents, strpos($contents, 'Subject:'));
        $subject = substr($subject, 0, strpos($subject, $this->message->getEol()));
        $email['headers'] = str_replace($subject . $this->message->getEol(), '', $email['headers']);
        $email['subject'] = trim(substr($subject . $this->message->getEol(), strpos($subject, ':') + 1));
        $to = substr($contents, strpos($contents, 'To:'));
        $to = substr($to, 0, strpos($to, $this->message->getEol()));
        $email['headers'] = str_replace($to . $this->message->getEol(), '', $email['headers']);
        preg_match('/[a-zA-Z0-9\\.\\-\\_+%]+@[a-zA-Z0-9\\-\\_\\.]+\\.[a-zA-Z]{2,4}/', $to, $result);
        if (!isset($result[0])) {
            throw new Exception("Error: An valid email could not be parsed from the email file '" . $filename . "'.");
        } else {
            $email['to'] = $result[0];
        }
        return $email;
    }