<?php
$conn = mysql_connect("localhost","root","xxx");

mysql_select_db("koncern",$conn);

$sql = "select * from avtal order by created desc";
$result = mysql_query( $sql, $conn ) or die(mysql_error()); 

while( $newArray = mysql_fetch_array($result) ) 
$id_avtal = $newArray['id_avtal'];
$created = $newArray['created'];
$name = $newArray['name'];
$signed = $newArray['signed']; // My date i want to calculate (2001-01-01)
$period = $newArray['period']; // Month i want to add to $signed (12)

$expired = mktime (0, 0, 0, date("Y"), date("m")+$period, date("d")); // add 12 month to 2001-01-01 and put it in $expired

$expired = date("Y m d", $expired); //Make it readable

echo "
<table border='1' cellspacing=2 cellpadding=3>
<tr>
    <td> ID </td>
    <td> Registrerat </td>
    <td> Namn </td>
    <td> Paskrivet datum </td>
    <td> Period </td>
    <td> Utgangsdatum </td>
</tr>
    
    <tr>
        <td> $id_avtal</td>
        <td> $created</td>
        <td> $name</td>
        <td> $signed</td>
        <td> $period</td>
        <td> $expired</td>
</table>
    ";
}
mysql_close($conn);
?>