PHP COM和C＃“ Out”和布尔参数

Question

I'm connecting through PHP "COM" to an API that is compatible with C#,C++ etc. I have successfully made connection with the application and trying to use "out" parameters through COM and getting a "type mismatch" error. Is the "out" parameter and is supposed to house the response and then the false. I'm not sure if it fails on that or if it fails on the false.. but either way I can't get this to work.

the C# example looks like this:

EdmViewInfo[] Views = null;
vault.GetVaultViews( out Views, false );

the php code looks like this:

$this->epdm = new COM('ConisioLib.EdmVault') or die("Cannot open vault.");

...

$this->aviews = array();      
try {

         $this->epdm->GetVaultViews($this->aviews, False );

   } catch (Exception $e) {

        echo 'Caught exception: ',  $e->getMessage(), "\n";

 }

I get the following returned errors: Caught exception: Parameter 1: Type mismatch.

Hope someone can help!

Answer 1

I'm not intimately familiar with PHP's COM extension, but I did some research online that suggests to use COM [out] parameters in PHP you use the & operator so PHP uses pass-by-reference semantics:

$arr = array();
$com = new COM( 'ConisioLib.EdmVault' ) or die( "Cannot open vault." );
$com->GetVaultViews( &$arr, false );

Note that even though $arr would be completely overwritten by the [out] parameter you still need to initialize $arr to a native PHP array type so the COM marshalling layer knows what types its dealing with.

Answer 2

It appears the two 'Array' types you are referencingf are not the same. ONe has a capital letter and the other does not. IN addition, what you reference as a C# example, looks more like VB.NET. It may be best to check the case of all your references to Array to make sure they are found. What editor are you using?