Bootstrap\View\Helper\BootstrapModalHelper::_createHeader PHP Method

    protected function _createHeader($title = null, $options = [])
    {
        $options += ['close' => true];
        $close = $options['close'];
        unset($options['close']);
        $options = $this->addClass($options, 'modal-header');
        $out = null;
        if ($title) {
            $out = '';
            if ($close) {
                $out .= $this->Html->tag('button', '×', ['type' => 'button', 'class' => 'close', 'data-dismiss' => 'modal', 'aria-hidden' => 'true']);
            }
            $out .= $this->Html->tag('h4', $title, ['class' => 'modal-title', 'id' => $this->_currentId ? $this->_currentId . 'Label' : false]);
        }
        return $this->_part('header', $out, $options);
    }