How to use pdo's prepared statement for order by and limit ?

Posted by user198729 on Stack Overflow See other posts from Stack Overflow or by user198729
Published on 2010-04-21T14:04:31Z Indexed on 2010/04/21 15:03 UTC
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$sql = "SELECT * FROM table ORDER BY :sort :dir LIMIT :start, :results";
$stmt = $dbh->prepare($sql);
$stmt->execute(array(
                    'sort'      => $_GET['sort'], 
                    'dir'       => $_GET['dir'], 
                    'start'     => $_GET['start'],
                    'results'   => $_GET['results'],
                    )
                );

I tried to use prepare to do the job,but $stmt->fetchAll(PDO::FETCH_ASSOC); returns nothing.

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