Hey all, why is this code throwing an out of memory error, when there is only 1 row in the database..

$request_db = mysql_query("SELECT * FROM requests
                WHERE haveplayed='0'") or die(mysql_error());  
                $request = mysql_fetch_array( $request_db );
                echo "<table border=\"1\" align=\"center\">";
                while ( $request['haveplayed'] == "0" ) {
                    echo "<tr><td>";
                    echo $request['SongName'];  
                    echo "</td><td>";
                    echo "<tr><td>";
                    echo $request['Artist'];    
                    echo "</td><td>";
                    echo "<tr><td>";
                    echo $request['DedicatedTo'];
                    echo "</td><td>";   
                }
                echo "</table>";

Thanks.