I am trying to get a record from a database using an sql lookup (sql1). This then returns as an array which is fine, but I need to use part of the array for my next stage.

$opt=get_records_sql($sql1);

    //Diags for SQL content
        print_object($opt);

    $n = count($opt);
    if (empty($opt))
        {
        echo 'No options selected';
        }
    else
        {

        $optno = $opt["subjectid"];

        // Diags of $optno
            echo '<br>$optno = '.$optno;

As you can see, I tried to use this: $opt["subjectid"] as subjectid is the fieldname that I am trying to access and I was under the impression that this was correct for accessing an array, but I get the following error:

Notice: Undefined index: subjectid

Array contents:

Array
(
    [1] => stdClass Object
        (
            [uname] => JHollands06
            [tutor] => M LSt
            [subjectid] => 1
            [year] => 2010
            [optid] => 1
        )

)