Question

I have other PDO Statements that execute fine, but this one is screwed up.

$sth = $dbh->prepare( 'SELECT * FROM `post` LIMIT ?,?' );
$sth->execute( array( 0, 10 ) );

The above does NOT work, but the below does work:

$sth = $dbh->prepare( 'SELECT * FROM `post` LIMIT 0,10' );
$sth->execute( array( 0, 10 ) );

So why won’t the first way display any of my results when it should be giving the same response?

---

So here is what I have now

$start = 0;
$perpage = 10;

$sth = $dbh->prepare( 'SELECT * FROM `post` LIMIT ?,?' );
$sth->bindValue(1, $start, PDO::PARAM_INT);
$sth->bindValue(2, $perpage, PDO::PARAM_INT);
$sth->execute(); 

this also does not work

$sth = $dbh->prepare( 'SELECT * FROM `post` LIMIT ?,?' );
$sth->bindParam(1, 0, PDO::PARAM_INT);
$sth->bindParam(2, 10, PDO::PARAM_INT);
$sth->execute();

Answer 1

The problem is likely that PDO will interpret any inputs as strings. You can try

$sth = $dbh->prepare( 'SELECT * FROM `post` LIMIT :low,:high' );
$sth->bindValue(':low', 0, PDO::PARAM_INT);
$sth->bindValue(':high', 10, PDO::PARAM_INT);
$sth->execute();

Or

$low = 0;
$high = 10;
$sth = $dbh->prepare( 'SELECT * FROM `post` LIMIT :low,:high' );
$sth->bindParam(':low', $low, PDO::PARAM_INT);
$sth->bindParam(':high', $high, PDO::PARAM_INT);
$sth->execute();

Source: How to apply bindValue method in LIMIT clause?