<?php

namespace APP\viewers;

/**
 * @package examples/blog
 * @author Xenophon Spafaridis <nohponex@gmail.com>
 */
class viewer implements \Phramework\API\viewers\IViewer {

    /**
     * Display output as html using a header and footer
     *
     * @param array $parameters Output parameters to display
     * @param $VIEWER_page $page Page's file name
     * @param $VIEWER_title Page's title
     */
    public function view($parameters) {
        $VIEWER_page = func_get_arg(1);
        $VIEWER_title = func_get_arg(2);

        extract($parameters);

        if (!isset($VIEWER_page) || !$VIEWER_page) { //In case page parameter is not set
            $VIEWER_page = 'error';
        }

        //copy title if not set as funtion argument and set in parameters
        if ((!isset($VIEWER_title) || !$VIEWER_title) && isset($parameters['title'])) {
            $VIEWER_title = $parameters['title'];
        }

        include(__DIR__ . '/header.php');


        //Include the page file
        include(__DIR__ . '/pages/' . $VIEWER_page . '.php');

        include(__DIR__ . '/footer.php');
    }

}

<?php

namespace APP\viewers;

/**
 * @package examples/blog
 * @author Xenophon Spafaridis <nohponex@gmail.com>
 */
class viewer implements \Phramework\API\viewers\IViewer {

    /**
     * Display output as html using a header and footer
     *
     * @param array $parameters Output parameters to display
     * @param $VIEWER_page $page Page's file name
     * @param $VIEWER_title Page's title
     */
    public function view($parameters) {
        $num_args = func_num_args();
        
        if ($num_args >1) {
            $VIEWER_page = func_get_arg(1);
        }
        if ($num_args >1) {
            $VIEWER_title = func_get_arg(2);
        }

        extract($parameters);

        if (!isset($VIEWER_page) || !$VIEWER_page) { //In case page parameter is not set
            $VIEWER_page = 'error';
        }

        //copy title if not set as funtion argument and set in parameters
        if ((!isset($VIEWER_title) || !$VIEWER_title) && isset($parameters['title'])) {
            $VIEWER_title = $parameters['title'];
        }

        include(__DIR__ . '/header.php');


        //Include the page file
        include(__DIR__ . '/pages/' . $VIEWER_page . '.php');

        include(__DIR__ . '/footer.php');
    }

}

Fix additional argument parsing at examples/blog.
Fix additional argument parsing at examples/blog.

Additional arguments might not be set (in case of error call etc)
