Yes. We only support PHP5, not PHP4.
A mod_php script should have the suffix .php and no #! line A CGI script should invoke #!/usr/bin/php5-cgi at the top and have the .cgi suffix.
For more information, see the documentation on using the web The PHP documentation is available at http://www.php.net.
Yes. You can use dynamic configuration files using an .htaccess file to restrict access to documents in your web directory. For more information on this, see the documentation on using the web.
For most common questions about setting up a web page and putting scripts, images, links, etc. in it in the CS domain, see the documentation on using the web.
This is a tough question; there is definitely some content such as sounds and images which will never be universally available to blind or deaf users. However for the most part, staying standards compliant and making sure that your pages have no syntax errors or dependency on a specific browser is the best way to be sure of reaching the widest possible audience.
By default, CGI scripts running on our server execute as the web user www; this user has no special permissions. Thus, the directory in which the script resides must be world-searchable, the script must be world-executable, and files read or written by the script must be world-readable or world-writable.
In certain applications, you may prefer that a script execute with your Unix account permissions so as to access protected data. We provide a "Secure CGI" mechanism for doing this.