Multi step form

1

hey guys, what is the easier or alternative way to make a multi step form?


if(isset($_POST['step2']))
{
    step 2 data
}else if(isset($_POST['step3']))
{
    step 3 data
}else
    step 1 data
}

I was trying to have just one form so that it will be easier for me to grab the form data and toss it into my DB but with this step i have 3 forms all submitting to $PHP_SELF… which I don’t know if its how its suppose to be done

So I was wondering if there was a different or perhaps easier and more robust way to add steps if needed.