Utilities::stringToNumeric throws Exception with SQLite driver

[mazinsw]

The column loop try to access nonexistent column, other driver like MySQL return false, but SQLite driver has a different behavior and throws a PDOException when $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); is set.

I suggest to use columnCount() from PDOStatement to avoid accessing invalid column index.

Sample code:

$columnCount = $statement->columnCount();
for ($i = 0; $i < $columnCount && ($columnMeta = $statement->getColumnMeta($i)) !== false; $i++) {

Because getColumnMeta are not supported by all driver it's return must always be checked

I am current using legacy branch it would be great if patches apply on it