Apache
- apache_child_terminate - Terminate apache process after this request
- apache_get_modules - Get a list of loaded Apache modules
- apache_get_version - Fetch Apache version
- apache_getenv - Get an Apache subprocess_env variable
- apache_lookup_uri - Perform a partial request for the specified URI and return all info about it
- apache_note - Get and set apache request notes
- apache_request_headers - Fetch all HTTP request headers
- apache_response_headers - Fetch all HTTP response headers
- apache_setenv - Set an Apache subprocess_env variable
- getallheaders - Fetch all HTTP request headers
- virtual - Perform an Apache sub-request