Código PHP:
<?php
$query2="SELECT * FROM datos WHERE codigo = '$codigo' ORDER BY fecha DESC";
$result2=mysql_query($query2);
echo "<table border = 0 >";
echo "<tr class='lateral2' > ";
echo "<td>dato 1</td>";
echo "<td>dato 2</td>";
echo "<td>dato 3</td>";
echo "<td>dato 4</td>";
echo "<td>codigo</td>";
echo "<td>fecha</td>";
echo "</tr>";
while ($row = mysql_fetch_array($result2)){
echo "<tr>";
echo "<td >".$row["dato1"]."</td>";
echo "<td>".$row["dato2"]."</td>";
echo "<td>".$row["dato3"]."</td>";
echo "<td>".$row["dato4"]."</td>";
echo "<td>".$row["codigo"]."</td>";
echo "<td>".$row["fecha"]."</td>";
echo '</tr>';
}
echo "</table>" ;
?>