PHP and COM_PHP Tutorial

PHP can operate COM and DCOM objects under the Win32 platform 1. I created a DLL to calculate some things. Is there any way to run this DLL under PHP? 2. What does 'Unsupported variant type: xxxx (0xxxxx)' mean ? 3. Is it possible to manipulate visual objects in PHP? 4. Can I save COM objects into the session? 5. How do I catch COM errors? 6. How do I generate a DLL file in PHP, just like I do in Perl? Doing the same thing? 7. What does 'Unable to obtain IDispatch interface for CLSID {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}' mean? 8. How do I run a COM object from a remote server? 9. I get the message: 'DCOM is disabled in C:path...scriptname.php on line 6', what should I do? 10. Can ActiveX objects be loaded in PHP pages? 11. Can I get an instance of COM runtime? 12. Is there any way Can events sent from COM objects be processed? 13. I got an error when calling a method on a COM object (with multiple interfaces). What should I do? 14. PHP can work with COM, but what about COM+? 15. PHP can operate COM object, can we imagine managing component resources through MTS, and thus managing PHP?
1. I created a DLL to calculate something. Is there any way to run this DLL under PHP?
You can't A simple DLL to operate in PHP. If this DLL contains a COM server and implements the IDispatch interface, you can operate it.
2. 'Unsupported variant type: xxxx (0xxxxx)' What does it mean?
There are many VARIANT types and their collections. Most are supported, but a few are not. Arrays are not fully supported, only one-dimensional arrays are supported. If you still find unsupported data types: please send a bug report (if you haven't already) and provide as much information as possible.
3. Is it possible to operate visual objects in PHP?
It is usually possible. However, PHP is mostly used as a script to run under a web server device, and visual objects never appear on the server desktop. If you use PHP as an application script such as PHP-GTK, there is no limit to operating visual objects through COM.
4. Can I save COM objects into the session?
No. COM instances are considered resources. Therefore they only work within a single script.
5. How do I catch COM errors?
Currently no other tool can track COM errors except PHP itself (@, track_errors, ..), which we are working on Consider a way to implement it.
6. Can I generate DLL files in PHP, just like I do in Perl?
No. Unfortunately there isn't any such PHP tool.
7. 'Unable to obtain IDispatch interface for CLSID {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}' What does it mean?
There are many reasons for this error:

CLSID number is wrong
The DLL where COM is located cannot be found
The component does not implement the IDispatch interface

8. How do I run a COM object from a remote server?
Just like you would run a local object. You just need to pass the remote IP address as the second parameter to the COM constructor.
Also make sure com.allow_dcom=true in your php.ini file.
9. I get the message: 'DCOM is disabled in C:path...scriptname.php on line 6 ', what should I do?
Edit the php.ini file and set com.allow_dcom=true.
10. Can ActiveX objects be loaded in PHP pages?
This should have nothing to do with PHP. ActiveX is a client End object, called by HTML pages. It has no direct relationship with PHP scripts. Of course, there is no possibility of direct server-side interaction.
11. Can I get an instance of COM runtime? ?
It can be achieved with monikers This function. If you want to get multiple references to the same Word instance, you can use the following code: that instance like shown: $word = new COM("C:docsword.doc");
If there is no instance of Word running, it will create a new instance. Otherwise, it will return its handle.
12. Is there a way Can events sent from a COM object be processed?
Not yet.
13. I got an error when calling a method on a COM object (with multiple interfaces). What should I do?
The answer is simple. People are not satisfied. I'm not too sure, but I think you don't have to do anything. If anyone else has some situations and opinions about this, please let me (harald.radi@nme.at) know:)
14. PHP can COM works, but what about COM+?
COM+ extends the COM framework and is used to manage components through MTS and MSMQ. There is nothing special that PHP does not support.
15. PHP can operate COM objects, can we imagine that through MTS manages component resources, and thus manages PHP?
PHP itself cannot handle transactions. That is to say, it will not roll back automatically if an error occurs. Even if you use component objects that support transactions, you still have to implement transaction management yourself. . (transactions)

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