Do you recommend to run sql queries before html page loads? If so, how to optimize this code?

I really don't know what you're asking. I wish I could help you but you didn't provide enough detail on what you're really trying to do. You're very vague when you mention "this information." Ideally, I believe this code should work and should display whatever you want it to. I've never had a problem with placement in PHP/MySQL code and I've been coding for four years.