Note that official support for PHP 8 will only be available on Linux, as a result of this App Service will only support PHP 8 on Apps Service Linux instances . For additional information on this t...
Updated Aug 11, 2023
Version 3.0
Blog Post
Didn't work for me.
After following all steps, phpinfo() shows previous version (7.4.30) instead of custom 8.9.2.
I think I have to change the "Runtime Stack" from PHP 7 to another one (not PHP) because if you select PHP, then it will override your custom PHP installation?