public function output($args)
    {
        $args += ['callback' => null];
        if (isset($args[0])) {
            $args['callback'] = $args[0];
        }
        if (!$args['callback'] || !is_callable($args['callback'])) {
            throw new RuntimeException('Callback option must be a callable.');
        }
        $this->init($args);

        $callback = $args['callback'];

        $this->_io->out('', 0);
        while ($this->_progress < $this->_total) {
            $callback($this);
            $this->draw();
        }
        $this->_io->out('');
    }
public function output($args)
    {
        $args += ['callback' => null];
        if (isset($args[0])) {
            $args['callback'] = $args[0];
        }
        if (!$args['callback'] || !is_callable($args['callback'])) {
            throw new RuntimeException('Callback option must be a callable.');
        }
        $this->init($args);

        $callback = $args['callback'];

        $this->_io->out('', 0);
        while ($this->_progress < $this->_total) {
            $callback($this);
            $this->draw();
        }
        $this->_io->out('');
    }
public function output ( $ args ) { $ args += [ 'callback' => null ] ; if ( isset ( $ args [ 0 ] ) ) { $ args [ 'callback' ] = $ args [ 0 ] ; } if ( ! $ args [ 'callback' ] || ! is_callable ( $ args [ 'callback' ] ) ) { throw new RuntimeException ( 'Callback option must be a callable.' ) ; } $ this -> init ( $ args ) ; $ callback = $ args [ 'callback' ] ; $ this -> _io -> out ( '' , 0 ) ; while ( $ this -> _progress < $ this -> _total ) { $ callback ( $ this ) ; $ this -> draw ( ) ; } $ this -> _io -> out ( '' ) ; }
Output a progress bar.

Takes a number of options to customize the behavior:

- `total` The total number of items in the progress bar. Defaults
to 100.
- `width` The width of the progress bar. Defaults to 80.
- `callback` The callback that will be called in a loop to advance the progress bar.

@param array $args The arguments/options to use when outputing the progress bar.
@return void
Output a progress bar .