Zend Framework 2 not loading config from mail.local.php - zend-framework2

Question

I am trying to get config smtp from mail.local.php, i did tried ServiceLoader getServiceLoader method, but I am unable to find a way to get configurations in my helper class:
What would be the best way to get autoload\mail.local.php,
namespace Helpers;
use Zend\Mail;
use Zend\Mail\Transport\Smtp as SmtpTransport;
use Zend\Mail\Transport\SmtpOptions;
class SendEmail
{
public static function email($to = '', $recipientName = '', $template = '')
{
$transport = new SmtpTransport();
// $options = new SmtpOptions(array(
// 'name' => 'smtp.mailtrap.io',
// 'host' => 'smtp.mailtrap.io',
// 'port' => 2525,
// 'connection_class' => 'crammd5',
// 'connection_config' => array(
// 'username' => 'f11f5a55fdfbf5',
// 'password' => '7780e1e7ee1cc5',
// ),
// ));
$mail = new Mail\Message();
$html = new \Zend\Mime\Part($template);
$html->type = 'text/html';
$body = new \Zend\Mime\Message;
$body->setParts(array($html));
$mail->setBody($body);
$mail->setFrom('admin#fonedoctors.com', 'Admin FoneDoctors');
$mail->addTo($to, $recipientName);
$mail->setSubject('Unpaid Invoices');
$transport->setOptions($options);
$transport->send($mail);
}
}

Answer 1

If you have your configuration file in /autoload/mail.local.php the configuration will have already been merged together as part of the ZF bootstrapping process. The merged module configuration can then be fetched from the service manager using $serviceManager->get('config');
To inject this configuration into your SendEmail class, you should ideally create a new factory.
class SendEmailFactory implements FactoryInterface
{
public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
{
$config = $container->get('config'); // all merged module configuration
$emailOptions = isset($config['my_email_config_key'])
? $config['my_email_config_key']
: [];
return new SendEmail($emailOptions);
}
}
You will also need to register the service with the service manager :
'service_manager' => [
'factories' => [
SendEmail::class => SendEmailFactory::class,
],
],
And update the SendEmail class to accept the options via the constructor.
class SendEmail
{
private $options;
public function __construct(array $options)
{
$this->options = $options;
}
// ...
}