Question

I want to prepare a statement for use inside a loop. When I try to execute the statement I see an error in the logs saying “Invalid parameter number: no parameters were bound'”.

What’s wrong with my code?

$itemSelectSql = "SELECT * FROM `tblItems` WHERE `itemID` IN (?)";
$itemSelectStmt = new Zend_Db_Statement_Mysqli($this->db_ro, $itemSelectSql);
while () {
  ...
  $itemIds = array();
  // populate $itemIds array
  ...
  $itemSelectStmt->execute(array($itemIds));
}

EDIT:

I think I may have a bug in my set up which explains why whatever I try fails. I’m seeing this:

PHP Warning:  call_user_func_array() expects parameter 1 to be a valid callback, 
class 'PDOStatement' does not have a method 'bind_param' in 
/var/www/lib/Zend/Db/Statement/Mysqli.php on line 204

EDIT:

I was using the wrong adapter. Should have been Zend_Db_Statement_Pdo 🙂

Thanks for the replies.

Answer 1

? can’t be replaced by an array, it has to be replaced by a scalar (thanks to comment for pointing out that this does not always mean string… brain-fart on my end). Let me know if this works better:

$itemSelectSql = "SELECT * FROM `tblItems` WHERE `itemID` IN ";
while () {
  ...
  $itemIds = array();
  // populate $itemIds array
  ...
  // we need to have the same number of "?,"'s as there are items in the array.
  // and then remove final comma.
  $qs = rtrim(str_repeat("?,", count($itemIds)),',');
  // create a statement based on the result
  $itemSelectStmt = 
       new Zend_Db_Statement_Mysqli($this->db_ro, "$itemSelectSql ($qs)");
  // bind to each of those commas.
  $itemSelectStmt->execute($itemIds);
}