title: Echo only if it hasn't already been echoed?
body: <p>What I'm trying to do is make a list of entries from a form, but I do not want the same entry to be displayed multiple times in the list if it was entered more than once in the form. For example, say one person enters "1" but then two people enter "2", I would only want the 2 to appear once in the list. What function would I be able to use for this? </p>