Upload a .php file to index?

Hello,

I would like to ask if it is possible to upload a .php file to the forum's root directory / index page and how to do that?
If this is not possible, is it there another way that I can have this file to my forum?

Thank you in advance

It's imposible to add any PHP file at Forumotion ,we don't use any file-uploader (ex : Fillezilla) .

So there is no way that I can put this file on my forum?

If is PHP ,you can't ,you can't add files ,you can use only jQuery,HTML and CSS

Ok, I see... Thank you very much for your answer