php_sapi_name Returns the type of interface between web server and PHP Description stringphp_sapi_name 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. <function>php_sapi_name</function> example ]]> See also PHP_SAPI.