One guess, shouldn't the extension have to be .php, i.e. index.php?
That lets PHP know it's a PHP page, but I've oft included
<?php ... ?>
in html pages w/o harm. Although, perhaps I need to make some adjustment to httpd.conf?
is the particular bit that's not being recognized.
Have I forgotten some httpd.conf configuration? This is a new installation, so I may have overlook some configuration, but I cannot see it (after many reviews of both httpd.conf and php.ini)
the lack of syntax highlighting should be a clue.
Yeah, I concur, but I cannot determine what the clue indicates. Other pages indicate properly , some .html , some .php.