How can I get more information about the configuration of PHP on my server?

Create a webpage in your /htdocs/ directory with the extension .php (for example, phpinfo.php). In the webpage file, include the following:

<?php
phpinfo();
?>

Access the webpage in your browser (for example, http://yourdomain.com/phpinfo.php)

See the PHP website for a full definition of how phpinfo() works.