if post is in a certain catigory

Hi,

I am trying to write a function that checks what category the current post is in and if it equals a certain category, in my case ‘2’, then it would return one thing if not, it would return nothing. here is my code so far:

if (get_the_category() == ‘2’) {
// Leave blank to Do Nothing
} else {
// Do Something
}

I know this is probably ways off what it should be. I know get_the_category() returns an array, so that is probably my first problem, but if I do echo 'cat:' . get_the_category(); It doesn’t echo anything.

Thanks in advance