Someone

   $sql1 = "SELECT * FROM siteblocks";
   $go1 = mysql_query($sql1) or sqlerr(__FILE__, __LINE__);
   while ($rez = mysql_fetch_array($go1) {
    foreach ($rez['id'] as $v) {
     if ($v == $blockid) {
      echo "<select value=\"".$v."\" selected>".$rez['text']."\n";
     }
      else {
      echo "<select value=\"".$v."\">".$rez['text']."\n";
     }
    }
   }