无法使用SwiftMailer发送附件

Question

我正在使用swiftmailer发送电子邮件。用户可以选择附件。问题是即使使用1KB附件，脚本也会运行超过30秒，这会导致致命错误。 我正在使用XAMPP和smtp.gmail.com发送消息。 tmp_path似乎正确。 这是我的代码：

require_once '../mailer/lib/swift_required.php';

                        sendMessage();

                        function validate($data)
                        {
                            $data = trim($data);
                            $data = stripslashes($data);
                            $data = htmlspecialchars($data);
                            return $data;
                        }

                        function sendMessage()
                        {
                            $SEND_MAIL_TO = "jaroslawwatroba@wp.pl";

                            $MAILER_FROM = "jarekwatroba@gmail.com";
                            $MAILER_USERNAME = "jarekwatroba@gmail.com";
                            $MAILER_PASSWORD = "***";

                            $MAILER_SMTP = "smtp.gmail.com";
                            $MAILER_SMTP_PORT = 465;
                            $MAILER_SMTP_USE_SSL = true;

                            if (!isset($_POST["sent"]))
                                return;

                            $name = validate($_POST["name_text"]);
                            $email = validate($_POST["email_text"]);
                            $phone = validate($_POST["phone_text"]);
                            $interest = validate($_POST["interest_text"]);
                            $language = validate($_POST["language_text"]);
                            $message = validate($_POST["message_text"]);

                            if (empty($name) || empty($email)) 
                            {
                                echo "<p><strong style=\"color: red\">Please fill in the required fields!</strong></p>";
                                return;
                            }

                            if (!filter_var($email, FILTER_VALIDATE_EMAIL))
                            {
                                echo "<p><strong style=\"color: red\">Please fill in a correct email address!</strong></p>";
                                return;
                            }

                            $message = Swift_Message::newInstance()
                                ->setSubject("Contact by form: ".$name." ".$interest." ".$language)
                                ->setFrom(array($MAILER_FROM))
                                ->setTo(array($SEND_MAIL_TO))
                                ->setBody($message);

                            echo "Path: ".$_FILES["attachment_text"]["tmp_name"];
                            $attachement = Swift_Attachment::fromPath($_FILES["attachment_text"]["tmp_name"], $_FILES["attachment_text"]["type"]);
                            $attachement->setFilename($_FILES["attachment_text"]["name"]);

                            $message->attach($attachement); 

                            if (!$MAILER_SMTP_USE_SSL)
                                $transport = Swift_SmtpTransport::newInstance($MAILER_SMTP, $MAILER_SMTP_PORT);
                            else
                                $transport = Swift_SmtpTransport::newInstance($MAILER_SMTP, $MAILER_SMTP_PORT, 'ssl');

                            $transport->setUsername($MAILER_USERNAME);
                            $transport->setPassword($MAILER_PASSWORD);

                            $mailer = Swift_Mailer::newInstance($transport);
                            $result = $mailer->send($message);

                            if ($result == 1)
                                echo "<p><strong style=\"color: green\">Your message is sent!</strong></p>";
                            else
                                echo "<p><strong style=\"color: green\">Your message wasn't successfully sent...</strong></p>";
                        }