Hello @Brian Whipp ,
Welcome to Microsoft Q&A forum.
Visual Studio doesn’t directly support php, you need the "PHP Tools for Visual Studio 2022" extension to add php support in VS 2022.
I checked on my side with the extension and looks like the extension doesn’t provide the support for previewing the single .php file in web browser in VS. I recommend referring to their official documentation and check if previewing the .php file in web browser is supported.
You may also contact here to double confirm this.
Best Regards,
Tianyu
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