public function getRows($sql = '') { if ($sql) { if (self::$debug) { echo $sql . '<br />'; } self::$stmt = self::$DB->query($sql); self::getErrInfo(); self::$querycount++; $result = self::$stmt->fetchColumn(); self::$stmt = null; } elseif (self::$stmt) { $result = self::$stmt->rowCount(); } else { $result = 0; } return $result; }