Got PHP Warning with Operand

Created by: ycgambo

Input:

server:add

Output:

Operand port is required
----------------------------------------
Usage: server:add [options] <port> [<port>...]

Create server named as prefix_port on each port. The default prefix is `server`, you can change it with -n or --name option.

Options:
  -n, --name [<arg>]    the name prefix of server.
  -p, --password <arg>  the password to use
  --process [<arg>]     process number.

Warning:

PHP Warning:  count(): Parameter must be an array or an object that implements Countable in xx/vendor/ulrichsg/getopt-php/src/GetOpt.php on line 192

The code:

        $getopt = new GetOpt();
        $getopt->setHelp(new CustomGetOptHelp());
        $getopt->addCommands(array(
            Command::create('server:add', '')
                ->setShortDescription('Add server on one or more port')
                ->setDescription('Create server named as prefix_port on each port. '
                    . 'The default prefix is `server`, you can change it with -n or --name option.')
                ->addOperands(array(
                    Operand::create('port', Operand::MULTIPLE + Operand::REQUIRED)
                ))
                ->addOptions(array(
                    Option::create('n', 'name', GetOpt::OPTIONAL_ARGUMENT)
                        ->setDescription('the name prefix of server.')
                        ->setDefaultValue('server'),
                    Option::create('p', 'password', GetOpt::REQUIRED_ARGUMENT)
                        ->setDescription('the password to use'),
                    Option::create(null, 'process', GetOpt::OPTIONAL_ARGUMENT)
                        ->setDescription('process number.')
                        ->setDefaultValue(4),
                )),
            Command::create('server:del', ''),
        ));