Description:
------------
odbc_prepare use SQLNumResultCols to get the count and description of den result column. The problem is a resultset the is depends on the paremeter or a multiple resultset with differens column.
SQLNumResultCols return only the correct result after SQLExecute is call! In odbc_execute is the same code, the code in odbc_prepare is needless.
Testet Solution on Windows, SQL Server 2005
php_odbc.c[908]
   result->numcols = 0;
/*
   SQLNumResultCols(result->stmt, &(result->numcols));
   if (result->numcols > 0) {
	if (!odbc_bindcols(result TSRMLS_CC)) {
		efree(result);
		RETURN_FALSE;
	}
   } else {
	result->values = NULL;
   }
*/	
   zend_list_addref(conn->id);


Reproduce code:
---------------
$connstr = "Driver={SQL Server};SERVER=localhost;DATABASE=master";
$sql = "select 1 as col1 \n".
       "select 2 as col2, 3 as col3 \n".
       "select 4 as col4, 5 as col5, 6 as col6";

$conn = odbc_connect($connstr, $username, $password);
$result = odbc_prepare($conn, $sql );
odbc_execute( $result );
do {
	odbc_result_all( $result );
} while ( odbc_next_result( $result ) );


Expected result:
----------------
col1
1

col2	col3
2	3

col4	col5	col6
4	5	6

Actual result:
--------------
col4	col5	col6
1	?x??x4[?
	?x?x4[?


col2	col3
2	3

col4	col5	col6
4	5	6