如何使< option selected =“selected”>由MySQL和PHP设置？

我的代码：

echo 'MysqL_query("SELECT * FROM id ORDER BY year");
$nr = MysqL_num_rows($rs);
for ($i=0; $i<$nr; $i++){
    $r = MysqL_fetch_array($rs);
    //if($year==$r["year"]){ $selected=' selected="selected"'; }//doesn't work so
    if (!in_array($r['year'],$tempholder)){
        $tempholder[$i] = $r['year'];
        echo "