PHP. Руководство по PHP. 2005
php_sapi_name
php_sapi_name
Description
string php_sapi_name (void)php_sapi_name() returns a lowercase string
which describes the type of interface between web server and PHP
(Server API, SAPI). In CGI PHP, this string is "cgi", in mod_php
for Apache, this string is "apache" and so on.
php_logo_guid
php_uname
Отвечу на любые вопросы. С уважением, Дмитрий Владимирович.