转换问题 - 如何使用MySQL_result更新脚本

I am updating an old script and have run into a problem, the old MySQL_result issue

foreach ($GS_Au_Parameter["sessionNames"] as $sessionName){
    $_SESSION[$sessionName] = mysql_result($GS_Au_RS,0,$GS_Au_Parameter["sessionColumns"][$idx]);
    $idx++;
 }

How would I update that?