src/Argument/Manager.php
public function defined($name, array $argv = null)
    {
        // The argument isn't defined if it's not defined by the calling code.
        if (!$this->exists($name)) {
            return false;
        }

        $argument = $this->arguments[$name];
        $command_arguments = $this->parser->arguments($argv);

        foreach ($command_arguments as $command_argument) {
            if ($this->isArgument($argument, $command_argument)) {
                return true;
            }
        }

        return false;
    }
public function defined($name, array $argv = null)
    {
        // The argument isn't defined if it's not defined by the calling code.
        if (!$this->exists($name)) {
            return false;
        }

        $argument = $this->arguments[$name];
        $command_arguments = $this->parser->arguments($argv);

        foreach ($command_arguments as $command_argument) {
            if ($this->isArgument($argument, $command_argument)) {
                return true;
            }
        }

        return false;
    }
public function defined ( $ name , array $ argv = null ) { // The argument isn't defined if it's not defined by the calling code. if ( ! $ this -> exists ( $ name ) ) { return false ; } $ argument = $ this -> arguments [ $ name ] ; $ command_arguments = $ this -> parser -> arguments ( $ argv ) ; foreach ( $ command_arguments as $ command_argument ) { if ( $ this -> isArgument ( $ argument , $ command_argument ) ) { return true ; } } return false ; }
Determine if an argument has been defined on the command line.

This can be useful for making sure an argument is present on the command
line before parse()'ing them into argument objects.

@param string $name
@param array $argv

@return bool
Determine if an argument has been defined on the command line .