What permissions does php require on IIS?

What permissions does php need to access window authentication in PHP under IIS? & nbsp; -- & gt; remove integrated WINDOWs & nbsp; Authentication & nbsp; -- & gt; the problem of forcing IIS to access IUSER_XXX with an anonymous account remains unsolved. Verification is still required to access PHP, indicating that the IIS anonymous account has insufficient permissions.
Access window authentication in PHP,
--> REMOVE Integrated WINDOWs Authentication
--> Force IIS to use the anonymous account IUSER_XXX for access
The problem persists. Verification is still required to access PHP, indicating that the IIS anonymous account has insufficient permissions.
I changed the password of IUSER_XXXX (I suspect that the password of ghost2003 has changed the unique account ID)
Re-grant all permissions to C: \ PHP and WWWROOT IUSER
Select all permissions for the "main directory" tab in IIS

Still unable to access PHP with IUSER
Angry!
Accessing PHP with ADMINISTRATOR is normal!
Use ADMIN as IUSR
Test the environment

But what permissions does IIS need to execute php?
Yes, it is a problem.
------ Solution --------------------
The details are not clear, but it is estimated that iis may require not only the read and write permissions of the website directory, but also the access permissions of php extension directories and related libraries.
Is the latter permission not set correctly?