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Bug #16496 Stored Procedure Parameters is_null issue
Submitted: 2002-04-08 11:54 UTC Modified: 2002-12-24 01:00 UTC
From: arthur dot mcgibbon at btinternet dot com Assigned:
Status: No Feedback Package: MSSQL related
PHP Version: 4.1.2 OS: Win2000
Private report: No CVE-ID: None
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 [2002-04-08 11:54 UTC] arthur dot mcgibbon at btinternet dot com
The problem is with executing a stored procedure with a null-value varchar output parameter.

1) create any SP that has a varchar(200) input/output param
create procedure Test
  @TestVarchar varchar(200) = null output
select @TestVarchar = 'Successful parameter feedback';

2) Run stored procedure using following statements...

$ConnectionObj = mssql_connect($DB_SERVER_NAME, $DB_USER, $DB_PASSWORD);
$aStatement = mssql_init("dbo.test", $ConnectionObj);
mssql_bind($aStatement, "RETVAL", &$RetVal, SQLINT4);
mssql_bind($aStatement, "@TestVarchar", &$Value, SQLVARCHAR, TRUE, TRUE, 200);
$ExecResult = mssql_execute($aStatement);

When PHP executes the SP it defines the parameter as VARCHAR(0) when it should be VARCHAR(200).

I've run SQL Profiler and it shows... 
declare @P1 varchar(0)
set @P1=NULL
exec dbo.test @P1 output
select @P1

when it should be
declare @P1 varchar(200)
set @P1=NULL
exec dbo.test @P1 output
select @P1

If you change the bind statement so that the @TestVarchar parameter is not null then the whole thing works.


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 [2002-12-07 01:53 UTC]
Please try using this CVS snapshot:
For Windows:

 [2002-12-24 01:00 UTC] php-bugs at lists dot php dot net
No feedback was provided for this bug for over 2 weeks, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
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