Can't use function return value in write context

Question

Ok, here is my code. What it is supposed to do is retrieve the referer that sent you to the page, the user will type someurl.com/refcreate.php?ref=username

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Answer 1

You're assigning a variable and not comparing it

This refcheck($referer) = false

Should be refcheck($referer) == false

Also, your method should have a default return if your IF condition fails.