PHP include() before doctype, causing a white space

Question

I have a website with a white space problem. I am including a few files before the doctype and this is causing a white space to be outputted.

After searching I have

Answer 1

I figured it out. You have to encode "UTF-8 without BOM" for the file you are including.

The master php file doesn't necessarily have to encode with "UTF-8 without BOM", and in fact I'd recommend that you don't if you have certain special characters (caused problems for me).

Was also answered here: PHP include causes white space at the top of the page