ZF2 使用 Gmail 發送含附件的 email‏

Zend Framework2 使用 Gmail 發送含附件的 email‏，範例：

use Zend\Mime;
use Zend\Mail\Message;
use Zend\Mail\Transport\Smtp as SmtpTransport;
use Zend\Mail\Transport\SmtpOptions;

try {
    // 純文字內容
    $text = new Mime\Part("信件內容");
    $text->type = Mime\Mime::TYPE_TEXT;
    $text->charset = 'utf-8';

    // 附件檔案
    $fileContent = fopen($zipFile, 'r');
    $attachment = new Mime\Part($fileContent);
    $attachment->type = 'application/zip';
    $attachment->filename = $cur['optid'] . '._zip';
    $attachment->encoding = Mime\Mime::ENCODING_BASE64;
    $attachment->disposition = Mime\Mime::DISPOSITION_ATTACHMENT;

    // 將純文字內容和附件檔案加入信件內容
    $mimeMessage = new Mime\Message();
    $mimeMessage->setParts(array($text, $attachment));

    // 建立信件
    $message = new Message();
    $message->setEncoding('utf-8')
            ->addTo('zz@example.com')
            ->addFrom('yy@example.com')
            ->setSubject('測試')
            ->setBody($mimeMessage);

    // Gmail 發信設定
    $transport = new SmtpTransport();
    $options = new SmtpOptions(array(
        'host' => 'smtp.gmail.com',
        'connection_class' => 'login',
        'connection_config' => array(
            'ssl' => 'tls',
            'username' => 'Gmail帳號',
            'password' => '密碼'
        ),
        'port' => 587
    ));

    $transport->setOptions($options);
    $transport->send($message);
} catch (\Exception $e) {
    var_dump($e->getMessage());
}

參考：
send email with attached files in ZF2
ZF2 Zend Mail, multipart/alternative and multipart/mixed Combined
Send HTML Mail Using ZF2
E-mail Attachments — Zend Framework 2 2.2.8 documentation