.php文件在Visual Studio代码中不起作用

Question

I think I broke mi VS Code trying to join php and html syntax when I have a php file with html and php code.

The problem is that VS Code doesn't recognize .php files. The Select Language Mode shows as a 'Plain Text' and when I try to configure file association for '.php' doesn't appear.

I try a solution found "php.validate.excecutablePath" and I did not have results.

Finally I tried installing again VS Code after uninstall and delete all but doesn't work.

I don't know what to do.