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-rw-r--r--user_guide_src/source/changelog.rst1
-rw-r--r--user_guide_src/source/general/environments.rst10
2 files changed, 9 insertions, 2 deletions
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 3989b52d2..de4af7efe 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -19,6 +19,7 @@ Release Date: Not Released
- General Changes
- PHP 5.1.6 is no longer supported. CodeIgniter now requires PHP 5.2.4.
+ - ``$_SERVER['CI_ENV']`` can now be set to control the ``ENVIRONMENT`` constant.
- Added an optional backtrace to php-error template.
- Added Android to the list of user agents.
- Added Windows 7, Android, Blackberry and iOS to the list of user platforms.
diff --git a/user_guide_src/source/general/environments.rst b/user_guide_src/source/general/environments.rst
index 40725feba..fa1b096e2 100644
--- a/user_guide_src/source/general/environments.rst
+++ b/user_guide_src/source/general/environments.rst
@@ -11,10 +11,16 @@ when "live".
The ENVIRONMENT Constant
========================
-By default, CodeIgniter comes with the environment constant set to
+By default, CodeIgniter comes with the environment constant set to use
+the value provided in ``$_SERVER['CI_ENV']``, otherwise defaults to
'development'. At the top of index.php, you will see::
- define('ENVIRONMENT', 'development');
+ define('ENVIRONMENT', isset($_SERVER['CI_ENV']) ? $_SERVER['CI_ENV'] : 'development');
+
+This server variable can be set in your .htaccess file, or Apache
+config using `SetEnv <https://httpd.apache.org/docs/2.2/mod/mod_env.html#setenv>`_.
+Alternative methods are available for nginx and other servers, or you can
+remove this logic entirely and set the constant based on the HTTP_HOST or IP.
In addition to affecting some basic framework behavior (see the next
section), you may use this constant in your own development to