How do I Loop through a recordset using PHP

Question

I have a recordset containing a MySql table with 5 columns, each one containing an email address of an official in a club.
Each row represents a different club, and each column a different type of official.
The first column represents chairmen, the next treasurers etc...
The recordset is called $mailset.
I need to loop through each row of $mailset and extract the email addresses of each column and concatenate them into a string seperated by semi colons ; so it ends up like this:
[email protected];[email protected];[email protected]; and so on.
This is how the recordset is set up:
mysql_select_db($database_dummyread, $dummyread);
$query_mailset = "SELECT club_chair_email, club_treas_email, club_sec_email, club_delegate_email, club_deputy_email FROM clubs";
$mailset = mysql_query($query_mailset, $dummyread) or die(mysql_error());
$row_mailset = mysql_fetch_assoc($mailset);
$totalRows_mailset = mysql_num_rows($mailset);
?>
I tried using a  loop to step through the recordset, but it always shows the first record, so its not moving the pointer through the file.
The pseudo code aught to be something like this:
Initialise variables and move to the first record
If there are records to process
               Read a record
                    Process all columns
            Move on to the next record
else
     if there are no records
          print an error message
else
Print the results.
Can anyone give me a hint as to how to move from row to row in a recordeset under the control of a loop.
I am using PHP and MySql. (as far as I know, it is the original - not PDO or MySqli)

Answer 1

Each call to mysql_fetch_assoc($mailset) retrieves the value at the current location and increments the pointer in the recordset array. So use either a do or while loop and call mysql_fetch_assoc($mailset) from within the loop.
From the docs:
Returns an associative array that corresponds to the fetched row and moves the internal data pointer ahead. mysql_fetch_assoc() is equivalent to calling mysql_fetch_array() with MYSQL_ASSOC for the optional second parameter. It only returns an associative array.