run command from controller symfony
use Symfony\Bundle\FrameworkBundle\Console\Application;
use Symfony\Component\HttpKernel\KernelInterface;
// *****
$application = new Application($kernel);
$application->setAutoExit(false);
$input = new ArrayInput([
'command' => 'swiftmailer:spool:send',
// (optional) define the value of command arguments
'fooArgument' => 'barValue',
// (optional) pass options to the command
'--message-limit' => $messages,
]);
// You can use NullOutput() if you don't need the output
$output = new BufferedOutput();
$application->run($input, $output);
// return the output, don't use if you used NullOutput()
$content = $output->fetch();