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4. Verbosity Levels

Verbosity Levels

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// ...
class CreateUserCommand extends Command
{
    // ...

    public function execute(InputInterface $input, OutputInterface $output)
    {
        $user = new User(...);

        $output->writeln(array(
            'Username: '.$input->getArgument('username'),
            'Password: '.$input->getArgument('password'),
        ));

        // the user class is only printed when the verbose verbosity level is used
        if ($output->getVerbosity() >= OutputInterface::VERBOSITY_VERBOSE) {
            $output->writeln('User class: '.get_class($user));
        }

        // alternatively you can pass the verbosity level to writeln()
        $output->writeln(
            'Will only be printed in verbose mode or higher',
            OutputInterface::VERBOSITY_VERBOSE
        );
    }
}

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if ($output->isQuiet()) {
    // ...
}

if ($output->isVerbose()) {
    // ...
}

if ($output->isVeryVerbose()) {
    // ...
}

if ($output->isDebug()) {
    // ...
}