Do you have a repository with this problem? The steps in vscode-remote-try-php includes running php -S 0.0.0.0:8000 which appears to work.

Open the vscode debugger, and change the RUN AND DEBUG task to Launch Built-in web server. Press F5 to start debugging, and it will start PHP server at port 3000.

PALO ALTO, Calif., May 04, 2023 (GLOBE NEWSWIRE) -- Metabob announced today a new artificial intelligence (AI)-powered virtual studio code (VSCode) extension for its debugging and refactoring tool ...