I solved the problem. The php engine works. I had a typing error in one of the php delimiters. Apache wasn't sending the code to the parser, because it wasn't being told to. This taught me a new trick to send php code to this forum. I used to go into /etc/httpd/conf/httpd.conf and comment out the LoadModule directive that loaded the php module, then restart to get php code to come to the browser source screen so it could be copied from there to this forum.
Now I just delete one of the characters in one of the delimiters. Much faster.