public function getColumns($table)
{
$query = "\r\n SELECT column_name\r\n FROM information_schema.columns\r\n WHERE table_name = '{$table}'\r\n ";
$stmt = $this->_pdo->query($query);
$columns = array();
while ($row = $stmt->fetch()) {
$columns[] = $row['column_name'];
}
return $columns;
}