Task.php
final protected function silentRead($prompt = null, $nl = null)
    {
        if ($prompt !== null) {
            $this->io->write($prompt, false);
        }
        return $this->io->silentReadLine($nl);
    }
final protected function silentRead($prompt = null, $nl = null)
    {
        if ($prompt !== null) {
            $this->io->write($prompt, false);
        }
        return $this->io->silentReadLine($nl);
    }
final protected function silentRead ( $ prompt = null , $ nl = null ) { if ( $ prompt !== null ) { $ this -> io -> write ( $ prompt , false ) ; } return $ this -> io -> silentReadLine ( $ nl ) ; }
Silent read from STDIN

@param string $prompt [optional]
@param bool $nl [optional]
@return string
Silent read from STDIN