True, False, Null capitalized, or not?

[betweenbrain]

I guess the title says it all. I personally prefer to see them as all caps myself.

[eddieajau]

PSR-2 is lowercase and I think that's the majority position.

https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md#25-keywords-and-truefalsenull

[dongilbert]

All lowercase, IMO.

[mbabker]

This is why I support lowercase:

return false; versus return FALSE;

One of those just doesn't look right, you decide which 😉

[dongilbert]

I don't like it when my code yells at me. :P