BP_Reply_By_Email_Parser::get_header PHP Метод

    public static function get_header($headers, $key)
    {
        // make sure we typecast $headers to an array
        // mandrill sets headers as an object, while our RBE IMAP class uses an array
        $headers = (array) $headers;
        if (empty($headers[$key])) {
            bp_rbe_log($key . ' parser - empty key');
            return false;
        }
        if ($key == 'To' && strpos($headers[$key], '@') === false) {
            bp_rbe_log($key . ' parser - missing email address');
            return false;
        }
        // Sender is attempting to send to multiple recipients in the "To" header
        // A legit BP reply will not add multiple recipients, so let's return false
        if ($key == 'To' && strpos($headers['To'], ',') !== false) {
            bp_rbe_log($key . ' parser - multiple recipients - so stop!');
            return false;
        }
        // grab email address in between triangular brackets if they exist
        // strip the rest
        $lbracket = strpos($headers[$key], '<');
        if ($lbracket !== false) {
            $rbracket = strpos($headers[$key], '>');
            $headers[$key] = substr($headers[$key], ++$lbracket, $rbracket - $lbracket);
        }
        //bp_rbe_log( $key . ' parser - ' . $headers[$key] );
        return $headers[$key];
    }

 /**
  * Webhook parser class method for SendGrid.
  */
 public function webhook_parser()
 {
     if (empty($_SERVER['HTTP_USER_AGENT']) || !empty($_SERVER['HTTP_USER_AGENT']) && 0 !== strpos($_SERVER['HTTP_USER_AGENT'], 'SendGrid')) {
         return;
     }
     if (empty($_POST) || empty($_POST['headers'])) {
         return;
     }
     bp_rbe_log('- SendGrid webhook received -');
     // Format email headers to fit RBE spec.
     $temp = explode("\n", $_POST['headers']);
     $headers = array();
     foreach ($temp as $line) {
         $colun = strpos($line, ':');
         if (false === $colun) {
             continue;
         }
         $key = substr($line, 0, $colun);
         $headers[$key] = stripslashes(trim(substr($line, $colun + 1)));
     }
     $data = array('headers' => $headers, 'to_email' => BP_Reply_By_Email_Parser::get_header($headers, 'To'), 'from_email' => BP_Reply_By_Email_Parser::get_header($headers, 'From'), 'content' => $_POST['text'], 'subject' => $_POST['subject']);
     $parser = BP_Reply_By_Email_Parser::init($data, 1);
     if (is_wp_error($parser)) {
         do_action('bp_rbe_no_match', $parser, $data, 1, false);
     }
     bp_rbe_log('- Webhook parsing completed -');
     die;
 }