mini-app for visual test

gistfile1.php

<?php
require_once __DIR__ . '/../vendor/autoload.php';

require_once __DIR__ . '/config/constant.php';

function requireAllConfigFilesFrom($dir)
{
    foreach (new DirectoryIterator($dir) as $fileInfo) {
        if ($fileInfo->isDot()) {
            continue;
        }
        if ($fileInfo->isDir()) {
            requireAllConfigFilesFrom($fileInfo->getFileName());
        } else if ($fileInfo->getFileName() != '.gitignore')  {
            require $fileInfo->getPath() . '/' . $fileInfo->getFileName();
        }
    }
}
if (getenv('APPLICATION_ENV') == 'production') {
    requireAllConfigFilesFrom(__DIR__ . '/config/production/');
} else {
    requireAllConfigFilesFrom(__DIR__ . '/config/development/');
}

$controllerName = 'IndexController';
$action = 'indexAction';

$requestUri = trim(current(explode('?', $_SERVER['REQUEST_URI'])), ' /');
$requestUriParam = explode('/', $requestUri);
if ($requestUriParam[0] == 'client') {
    $fileTypeElement = explode('.', $requestUri);
    $fileType = mb_strtolower($fileTypeElement[count($fileTypeElement) - 1]);
    include_once __DIR__ . '/../' .$requestUri;
    switch ($fileType) {
        case 'css':
            header('Content-type: text/css');
            break;
        case 'js':
            header('Content-type: text/javascript');
            break;
        case 'jpg':
        case 'png':
        case 'gif':
        case 'jpeg':
            header('Content-type: image/' . $fileType);
            break;
    }
    return;
}
if (!empty($requestUriParam[0])) {
    $controllerName = implode('',array_map('ucfirst', explode('_',$requestUriParam[0]))) . 'Controller';
}
if (!empty($requestUriParam[1])) {
    $action =  implode('',array_map('ucfirst', explode('_',$requestUriParam[1]))) . 'Action';
}
if (!is_file(CONTROLLERS_PATH . $controllerName . '.php')) {
    $controllerName = 'ErrorController';
    $action = 'NotFoundAction';
}
$controller = '\Controller\\' . $controllerName;
$object = new $controller();
if (!method_exists($object, $action) && method_exists($object, 'indexAction')) {
    $action = 'indexAction';
} elseif (!method_exists($object, $action)) {
    $object =  new Controller\ErrorController();
    $action = 'NotFoundAction';
}

while (count($requestUriParam) < 5) {
    $requestUriParam[] = '';
}
list(,,$param1, $param2, $param3) = $requestUriParam;
echo $object->$action($param1, $param2, $param3);