PHP Component Object Model "Access is denied"

Question

My development environment is PHP 5.3, IIS 7.5, and Window7 Home. I am developing a prototype application, which requires the PHP function imagewindowgrab(). This function requires calling the Windows Component Object Model (COM).

My single line of code was this:

$browser = new COM("InternetExplorer.Application") or die("Unable to instantiate IE");

It produced the following error:

Fatal error: Uncaught exception 'com_exception' with message 
'Failed to create COM object `InternetExplorer.Application': Access is denied. ' 
in C:\inetpub\wwwroot\trial.php:8 Stack trace: #0 C:\inetpub\wwwroot\trial.php(8): com->com('InternetExplore...') #1 {main} thrown 
in C:\inetpub\wwwroot\trial.php on line 8

After searching for hours, trolling through .NET forums, and finding good resources:

• http://forums.asp.net/t/1680634.aspx/1
• http://learn.iis.net/page.aspx/624/application-pool-identities/

What finally worked for me was following the instructions outlined in the answer to this SO question:
Accessing Office Word object model through asp.net results in "failed due to the following error: 80070005 Access is denied."

AND following up those instructions with the following:

1. On the command line enter DCOMCNFG
2. Click right on Console Root > Component Service > Computers > My Computer and select Properties
3. On the tab COM Security > Access Permissions click on Edit Default and add the user (e.g. IIS_IUSRS) or service
4. Check allow local access

This appears to have taken care of my Access Permission problems with the COM framework from PHP.

Answer 1

This question appears unanswered but answer have self explained in question . I am just putting here :-

Tried Code :-

$browser = new COM("InternetExplorer.Application") or die("Unable to instantiate IE");

Error Generated :-

Fatal error: Uncaught exception 'com_exception' with message 
'Failed to create COM object `InternetExplorer.Application': Access is denied. ' 
in C:\inetpub\wwwroot\trial.php:8 Stack trace: #0 C:\inetpub\wwwroot\trial.php(8): com->com('InternetExplore...') #1 {main} thrown 
in C:\inetpub\wwwroot\trial.php on line 8

Steps and resources that helped to solved :-

Good Resources:-

http://forums.asp.net/t/1680634.aspx/1

http://learn.iis.net/page.aspx/624/application-pool-identities/

Resources that actually help to solve :-

Accessing Office Word object model through asp.net results in "failed due to the following error: 80070005 Access is denied."

Steps :-

1. Open a command prompt window and type DCOMCNFG to open the Component Services interface.
2. Expand Console Root > Component Service > Computers and right-click on My Computer, And Select Properties
3. In the Tab COM Security > Access Permissions Click on Edit Default Add the User (Ex. IIS_IUSRS) or service
4. Check Allow for Local Access

Note : Take care of Access Permission problems with the COM framework from PHP.