# Apache

&reftitle.intro;

These functions are only available when running PHP as an Apache module.

As of PHP 4.3.2, `PATH_TRANSLATED` is no longer set implicitly under the Apache 2 SAPI in contrast to the situation in Apache 1, where it's set to the same value as the `SCRIPT_FILENAME` server variable when it's not populated by Apache. This change was made to comply with the CGI specification that `PATH_TRANSLATED` should only exist if `PATH_INFO` is defined.

Apache 2 users may use `AcceptPathInfo = On` inside `httpd.conf` to define `PATH_INFO`.

&reference.apache.setup; &reference.apache.constants; &reference.apache.reference;