What are the PHP operators “?” and “:” called and what do they do?

Question

What are the ? and : operators in PHP?

For example:

(($request_type == \'SSL\') ? HTTPS_SERVER : HTTP_SERVER)

Answer 1

That is a one line if statement:

condition ? true : false

Translated to an ordinary if statement in your case, that would be:

if($request_type == 'SSL') HTTPS_SERVER;
else HTTP_SERVER;