Example view render as helper

helper-view.php

<?php

if (! function_exists('view'))
{
    /**
     * Render view as html with layout system
     * @author Nimit Suwannagate <ethaizone@hotmail.com>
     */
    function view($viewName, $data = array(), $layout = 'default')
    {
        if (! is_array($data))
        {
            throw new Exception("View data must be array.");
        }

        extract($data);

        //generate view html
        $viewFile = "views/{$viewName}.php";
        ob_start();
            include($viewFile);
            $yield = ob_get_contents();
        ob_end_clean();

        // generate layout
        // html from view will show to layout as $yield variable
        $layoutFile = "views/layouts/{$layout}.php";
        ob_start();
            include($layoutFile);
            $html = ob_get_contents();
        ob_end_clean();

        return $html;
    }
}