laravel - 将应用程序移动到另一台服务器，空白页面和工匠错误

I need to move app in laravel from web server to local sever (I trying on XAMPP). I moved all files, database and in files I changed URI in:
/index.php

<? header("Location: http://localhost/public"); ?>

but I get errors in:

• On http://localhost/ I have blank page
• On http://localhost/public and every another route I getting error: http://pastebin.com/zUFqS8ET

• When I use php artisan or another commands I getting error:

  [ErrorException] Undefined index: HTTP_USER_AGENT

I forgot about somethink?

EDIT:
Ok, I downgrade my PHP to 5.6.* but artisan still not working - same error, what's the problem?

EDIT 2:
Here is logs - problem is in SMF but I don't know why ... http://pastebin.com/HZQ7CZeg

Sorry, I know this is obvious. But, have you run PHP composer install? And as a basic test you can create an empty laravel project to test your computer's configuration. If it works then you know its something in your project you need to update.

Laravel installation