$result_projektnamen = mysql_query("SELECT title FROM $Table_projects");
   
   //$projektnamen = mysql_fetch_array($result_projektnamen);
   
   echo '<hr>';
   while($row1 = mysql_fetch_array($result_projektnamen)){
    printf("title: %s", $row1["title"]);
  echo '<br>';
   }
   echo '<hr>';
   echo $row1[0];
   echo $row1[1];

$result_projektnamen = mysql_query("SELECT id,title FROM $Table_projects");
echo '<select name="test">';
          while($row = mysql_fetch_array($result_projektnamen)){
                echo '<option value="'.$row['id'].'">'.$row['title'].'</option>';
          }
echo '</select>';