Access to a php file in themes folder

Question

I am trying to access a php file in the theme folder of wordpress.

I have created a page call download.php. Users are redirected to this file after successful payment from paypal.

How can I access the file without using http://website.com/wp-content/themes/test/download.php . I want to access the file through http://website.com/download.php and would also like to know how I can use a function found in my functions.php in this file.

Pls help

I'm a lost.

Thanks

Answer 1

May be the answer can help someone.

To resolve the problem, I have created a page called 'Download' and in my page.php, I have checked if the title is 'Download', then I have included the file download.php in it.

Thanks for your help Umair Iqbal