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This is an open question, however, it is also very vague and I have no idea what kind of answer is expected here
Please clarify the question thx.
Looking at the quiz question you've attached this forum post to, I believe it is asking you to indicate what the data type for the placeholder variable '?' would be in that prepared statement.
You can refer to the PDOStatement::bindParam documentation in the PHP manual.
I don't want to give the exact answer on the forums, but have a look at the Example #2 on that manual page. It will be something with the prefix
Jonathan Woodbury12,711 Points
That really is a poorly written question. I had not idea what it was talking about either. Thank you for your help.