如何在while循环中只允许每个名称之一？

Question

I am not sure how to word this question, but I have a bunch of codes and I am trying to make an options list so that the user can select which one they want. I am fetching the codes from a query $acquery = mysql_query("SELECT * FROM schedules") and I put it into a while loop.

PHP:

<?php
while($ac = mysql_fetch_assoc($acquery))
{
$sel = '';
echo '<option value="'.$ac[code].'" '.$sel.'>'.$ac[fullname].'</option>';
}
?>   

Since the schedule query has multiples of the same code, it lists the same thing repeatedly. How can I make sure that it lists a unique code ($ac[code] and $ac[fullname] every time?

Answer 1

If I understand the question correctly, you can do this by fixing the SQL query to do what you want:

SELECT DISTINCT code, fullname
FROM schedules;