$sql = "Select * FROM ?";

Placeholders aren't supported in table and column names. See DBI "drop table" for a recent, related discussion.

Use $sql = "SELECT * FROM " . $dbh->quote_identifier($product); instead.

And I recommend the RaiseError option to connect, which automatically catches DB errors and prints useful error messages.

In reply to Re: checkbox and mysql select by moritz
in thread checkbox and mysql select by breal

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