set up an ODBC DSN and use php's odbc functions
$cnx = odbc_connect(DSN,user,password);
$result = odbc_exec($cnx,SQL_query_string);
while (odbc_fetch_row($result)) {
$fieldVal = odbc_result($result,N);
//or $fieldVal = odbc_result($result,’fieldname’);
. . .
process row
. . .
}
or
while (odbc_fetch_into($result,$array)) {
list($fld1, .., $fldn) = $array;
. . .
process row
. . .
}
hth