overriding auto_prepend_file

What's the best way to override auto_prepend_file in httpd.conf or .htaccess? I have a default setting in php.ini that sets it to an actual filename, but I want to turn it off for a specific area of my site. I've found that this works: php_value auto_prepend_file "/dev/null" but I was wondering if there is a better or more preferred way. I can't use an empty string ("") because it's not accepted by the configuration file parser. - Dave -- Dave Seidel CulturePort, Inc. dave@superluminal.com