Error fetching array (mysql)

[Sweetie]

Hello!
Here the code:

$db->query("SELECT * FROM bill_temp WHERE user_id='".$usrid."'");
  // Check if have rows
  if($db->numrows() != 0)
  {
  while($row = $db->getRows())
  {
   $txn_id = $row['num_bill'];
  }
  foreach($q->billStatus($txn_id,TRUE) as $idbill=>$v) 
  {
   $mp = $v['amount'];
   if($v['status'] == 60)
   {
   $db->query("SELECT amount FROM bill_temp WHERE user_id='".$usrid."' AND num_bill='".$idbill."'");
   while($row = $db->getRows()) $moneyCheck = $row['amount'];
   // Amount checking
   if($moneyCheck == $mp)
   {
    //some code
   }
   else {
    //some code
   }
   }
   if($v['status'] > 100)
   {
   //some code
   }
  }
  }
  else
  echo ('numrows == 0');

But code fails at: $txn_id = $row['num_bill'];
Undefined index: num_bill (in this line: $txn_id = $row['num_bill'];)
Here the var_dump($row):
array(1) { [0]=> array(3) { ["user_id"]=> string(1) "1" ["num_bill"]=> string(8) "s7M1RxCf" ["amount"]=> string(2) "11" } }

What's wrong in code?

[jadebox]

I have to assume that $db->getRows() returns a list of the rows returned from the query. If that's the case, it's not surprising that "$row['num_bill']" is not defined.

You probably need to enumerate row returned by getRows(). I don't know what class you've used, but you probly need to do something like:

$rows = $db->getRows();
foreach ($rows as $row)
{
$txn_id = $row['num_bill'];
...
}