You want to add the mod_php scripting module to your existing Apache web server.
Download the mod_php package source from the web site at http://php.net/ (follow the links for downloading) and unpack it. Then:
% cd php-4.3.2 % ./configure \ > --with-apxs= /usr/local/apache/bin/ apxs % make # make install
Restart the server.
To test that your installation was successful, create a file named info.php in your server's DocumentRoot; the file should contain the single line:
<?php phpinfo( ); ?>
Add the following lines to your server's httpd.conf file:
<IfModule mod_php4.c> AddType application/x-httpd-php .php AddHandler application/x-httpd-php .php </IfModule>
After restarting your server, try fetching the document info.php using a browser. You should see a detailed description of the PHP options that are active.
There are numerous additional options and extensions available for PHP; the recipe given here is only for the most basic installation.