使用while循环返回PDO结果，如何判断是否没有记录返回？

Question

New to PHP, trying to figure this out.

$missing_query = $handler->query('SELECT id FROM bla WHERE blee=1 ORDER BY id');
                    while ($missing  = $missing_query ->fetch(PDO::FETCH_OBJ)) {
                    echo $missing->id, ' ';
                    } 

This works fine, but no matter what I try, I can't get it to return "no results" if the While is not completed. If there is an IF statement outside the While, it returns "no results" after the loop is complete. If there are no loops, putting it inside doesn't work.

What variable will show me that there were no records returned from the FETCH?

Thanks!

EDIT

This does work, thanks for the reminder to use ==, forgot about that.

$querycount = $missing_query ->rowCount();
if ($querycount  == 0) {echo 'No records';}

Is there a better way to accomplish this?

Why doesn't

if (empty($missing_query)) {echo 'No records';}

Work?

Answer 1

I figured this out.

        if($missing_query->rowCount()) {
            while ($missing  = $missing_query ->fetch(PDO::FETCH_OBJ)) {
                echo $missing->id, ' ';
            }
        } else {
            echo 'No records';
        }