odbc_prepare

Is it just me or is the code above misleading? It makes it look like odbc_execute() returns a resource suitable, say, for passing to one of the odbc_fetch_* functions.
In fact, odbc_execute() returns a boolean, which simply indicates success (TRUE) or failure (FALSE). The variable to pass to odbc_fetch_* is the same one that you pass to odbc_execute():
<?php
$res = odbc_prepare($db_conn, $query_string);
if(!$res) die("could not prepare statement ".$query_string);
if(odbc_execute($res, $parameters)) {
 $row = odbc_fetch_array($res);
} else {
 // handle error
}
?>

The resource returned by odbc_prepare can be freed with odbc_free_result.

after 2 days finaly got a working code
(SQL SERVER stored procedure with parameters through ODBC)
STORED PROCEDURE
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[sp_prev_frm_prev2]
 @id int, 
 @cli nchar(20)
AS
BEGIN
 SET NOCOUNT ON;
 --SELECT 1
END
PHP
$stmt=odbc_prepare($conn,'{call db.dbo.sp_prev_frm_prev2(?,?)}');
$params=array(1,"clie");
$result = odbc_execute($stmt, $params);

Use this example for IBM DB/2:
$q = "update TABLE set PASS=? where NAME=?";
$res = odbc_prepare ($con, $q);
$a = "secret"; $b="user";
$exc = odbc_execute($res, array($a, $b));