I wrote a very simple ActiveX Library with Delphi 5, containing an Automation Object with just a few functions. Calling this object from Delphi, ASP or PHP 4.0.6 worked fine, but from PHP 4.1.1 did not.

$myObj = new COM(...); or $myObj = com_load(...); worked and returned an object (at least echo $myObj; said so) and $myObj = null destroyed it, but whenever I called any object function (whether by $myObj->...; or com_invoke(...) did not matter), I got an Access Violation.

I tried lots of different versions with functions actually doing nothing at all and with different kinds of parameters or none, the result was always the same. Also, the problem occurred on both Apache and IIS, and with the Library written under Delphi as well as under Visual C++.

Only when replacing PHP 4.1.1 by older 4.0.6 (I did not replace php.ini), it suddenly worked as expected.

Personally, I am satisfied now. But for others who might spend a lot of time and nerves as I did, i thought it worth dropping this note