Simple PHP echo code not working

Question

Here is my html with a php script:

Answer 1

Check if you have installed more than 2 versions of PHP. The server may get confused sometime regarding this. First uninstall the php versions and reinstall only one PHP version.

Answer 2

Make sure the extension is .php and check echo tags on phpmanual. php.net/manual/en/function.echo.php

When you try to include html tags inside echo function, you need to insert between "" or '' and use . between elements.

Answer 3

Any of these (or more) could be your answer why it is not working

1. Is there actually PHP running on your computer?
2. Is the file extension .php?
3. Are you accesing the file through your browser doing something like http://localhost/myfile.php
4. If it is on a remote server, is there PHP installed?