can't get return value from COM in PHP5

I am running into problems obtaining the return value of a method I
have in a COM+ DLL.

I have the following code snippet:

STDMETHOD(add)(long num1, long num2, long* result);

STDMETHODIMP CsampleApp::add(long num1, long num2, long *result)
{
*result = num1 + num2;

return S_OK;
}

I wrote a PHP script to invoke this method. It can't get the new value
from this function.

<?php
echo "Call Com Object<br>";
$instance = new COM("sampleApp.SimpleCom");

$instance ->test(1, 2, $returnValue);
echo "Return should be: " . $returnValue;

$instance->release();
?>

I am getting $returnValue = 0 instead of 3.

I have tried using Variants but that is not going well. I am hoping
someone may be able to assist me.

Thank you in advance.
Kelvin

re: can't get return value from COM in PHP5

[color=blue]
> I am running into problems obtaining the return value of a method I
> have in a COM+ DLL.[/color]
[color=blue]
> STDMETHOD(add)(long num1, long num2, long* result);
>
> STDMETHODIMP CsampleApp::add(long num1, long num2, long *result)
> {
> *result = num1 + num2;
>
> return S_OK;
> }[/color]
[color=blue]
> I wrote a PHP script to invoke this method. It can't get the new value
> from this function.[/color]
[color=blue]
> <?php
> echo "Call Com Object<br>";
> $instance = new COM("sampleApp.SimpleCom");[/color]
[color=blue]
> $instance ->test(1, 2, $returnValue);
> echo "Return should be: " . $returnValue;[/color]
[color=blue]
> $instance->release();
> ?>[/color]
[color=blue]
> I am getting $returnValue = 0 instead of 3.[/color]

Could it be because... the method name in your COM component is "add"
but you are calling a method "test" in your PHP instance? Or possibly
because you need to pass $returnValue by reference (ie &$returnValue)
because it's supposed to be a pointer? Or maybe both?

---
Steve

re: can't get return value from COM in PHP5

Hi Steve,

Thanks for replying. The method name difference is a typo on my part.
Sorry about that.

I tried passing $returnValue by reference but the value is still 0
instead of 3.

Thanks,
Kelvin