Kubar es una lib que añade una barra personalizable y modular a tu template con info relevante de tu aplicación.

readme.md

Poner kubar.php en la carpeta libs y en el template lo siguiente:

kubar.php

<?php
/**
 */
class Kubar
{
    public static $bar_bg = '#FE4747';
    public static $menu_bg = '#00A1CB';
    public static $td_border = '1px dotted #EEE';
    public static $td_color = 'white';
    public static $button_selected = '#FFFC19';
    
    
    public static $icons = array(
        'Config'=>'settings',
        'Vars'=>'storage',
        'Controller'=>'storage',
    );
    /**
     */
    public static function css()
    {
        ?>
        <link href="https://fonts.googleapis.com/icon?family=Material+Icons"  rel="stylesheet">
        <style>
            body { margin: 0; }
            .kubar
            {
                background: <?=self::$bar_bg?>;
                bottom: 0;
                position: fixed;
                width: 100%;
            }
            .kubar button
            {
                padding: 4px;
                text-align: left;
                white-space: nowrap;
            }
            .kubar button span { vertical-align: super; }
            .kubar div
            {
                background: <?=self::$menu_bg?>;
                position: absolute;
            }
            .kubar > div button
            {
                width: 100%;
            }
            .kubar td
            {
                border: <?=self::$td_border?>;
                color: <?=self::$td_color?>;
                padding: 8px;
            }
            .kubar .hide { display: none; }
        </style>
        <?php
    }
    /**
     */
    public static function show()
    {
        self::css()?>
        <div class="kubar">
            <?php
            $a['Config'] = Config::getAll();
            $a['Vars'] = array('GET'=>$_GET, 'POST'=>$_POST, 'SESSION'=>$_SESSION);
            $a['Controller'] = View::getVar();
            self::menu($a)?>
        </div>
        <?self::jquery();
    }
    /**
     */
    public static function jquery()
    {
        ?>
        <script>
            if (typeof jQuery == 'undefined')
            {
            var script = document.createElement('script');
                script.type = "text/javascript";
                script.src = "https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js";
                document.getElementsByTagName('head')[0].appendChild(script);
            }
            window.onload = function()
            {
                $('body').on('click', 'button', function()
                {
                    $('.kubar button').css('background', '');
                    $(this).css('background', '<?=self::$button_selected?>');
                    
                    var div = $(this).next('div');
                    $(this).siblings('div').not(div).addClass('hide');
                    $(div).children('div').addClass('hide');
                    $(div).toggleClass('hide');
                    
                    var height = $(div).height();
                    var width = $(div).width();
                    var left = $(div).parents('div').width();
                    $(div).css({
                        'height':height+'px',
                        'left':left+'px',
                        'bottom':0,
                        'width':width+'px',
                    });
                    if (height>400)
                    {
                        $(div).css({
                            'height':'400px',
                            'overflow':'auto',
                            'width':'800px',
                        });
                    }
                    
                    var div_first = $('.kubar > div').not('.hide');
                    var height_first = $(div_first).height();
                    $(div_first).css({
                        'left':0,
                        'bottom':'39px',
                    });
                });
            }
        </script>
        <?php
    }
    /**
     */
    public static function menu($a)
    {
        $c = count($a);   
        $i = 1?>
        <?foreach($a as $k=>$v):
            if( is_array($v) ){
                $icon = empty(self::$icons[$k]) ? 'keyboard_arrow_right' : self::$icons[$k];
                ?>
                <button>
                    <i class="material-icons right"><?=$icon?></i>
                    <span><?=$k?></span>
                </button>
                <div class="hide">
                    <?if ( is_array($v) ) self::menu($v)?>
                </div>
            <?}else{
                $v = is_object($v) ? '<pre>' . print_r($v, 1) . '</pre>' : $v;
                if (!$v) $v = is_null($v) ? 'NULL' :'(empty)';
                if ($i==1){?><table><?}?>
                    <tr>
                        <td><?=$k?></td>
                        <td><?=$v?></td>
                    </tr>
                <?if ($i==$c){?></table><?}
                ++$i;
            }
        endforeach;
    }
}