Are there best practices for configuring Apache to access PHP 5.3 or 5.4 selectively?

To selectively configure Apache to access PHP 5.3 or 5.4, you can use the SetHandler directive in your Apache configuration file to specify the PHP version for different directories or files. This allows you to run different versions of PHP on the same server for different parts of your application. ```apache <Directory /path/to/directory> SetHandler application/x-httpd-php53 </Directory> <FilesMatch \.php$> SetHandler application/x-httpd-php54 </FilesMatch> ```