Thanks for getting back so quickly. I tried to access
http://<server>/phpdig/search.php... and a blank browser screen is all I get. Same as with
http://<server>/admin/index.php...
I put in a test.php file with phpinfo(); in /usr/local/phpdig/ and accessed the file through the browser/server. The PHP information is rendered in the browser as expected. So I am not sure what is wrong.
Also, I do not get any authentication dialog box when I access the
http://<server>/admin/index.php (or install.php) page.