Merge branch '3.1-stable' into develop

7 files changed, 14 insertions, 48 deletions

diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index f9e7f572c..26587ad3e 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -48,8 +48,12 @@ Release Date: Not Released
 Bug fixes for 3.1.1
 -------------------
 
-
-
+-  Fixed a bug (#4732) - :doc:`Session Library <libraries/sessions>` triggered errors while writing data for a newly-created sessions with the 'memcached' driver.
+-  Fixed a regression (#4736) - :doc:`Image Manipulation Library <libraries/image_lib>` processing via ImageMagick didn't work.
+-  Fixed a bug (#4737) - :doc:`Query Builder <database/query_builder>` didn't add an ``OFFSET`` when ``LIMIT`` is zero or unused.
+-  Fixed a regression (#4739) - :doc:`Email Library <libraries/email>` doesn't properly separate attachment bodies from headers.
+-  Fixed a bug (#4754) - :doc:`Unit Testing Library <libraries/unit_testing>` method ``result()`` didn't translate ``res_datatype``.
+-  Fixed a bug (#4759) - :doc:`Form Validation <libraries/form_validation>`, :doc:`Trackback <libraries/trackback>` and `XML-RPC <libraries/xmlrpc>` libraries treated URI schemes in a case-sensitive manner.
 
 Version 3.1.0
 =============
diff --git a/user_guide_src/source/general/compatibility_functions.rst b/user_guide_src/source/general/compatibility_functions.rst
index 434b0982f..936f2a24b 100644
--- a/user_guide_src/source/general/compatibility_functions.rst
+++ b/user_guide_src/source/general/compatibility_functions.rst
@@ -222,29 +222,6 @@ Function reference
 	For more information, please refer to the `PHP manual for
 	array_column() <http://php.net/array_column>`_.
 
-.. php:function:: array_replace(array $array1[, ...])
-
-	:param	array	$array1: Array in which to replace elements
-	:param	array	...: Array (or multiple ones) from which to extract elements
-	:returns:	Modified array
-	:rtype:	array
-
-	For more information, please refer to the `PHP manual for
-	array_replace() <http://php.net/array_replace>`_.
-
-.. php:function:: array_replace_recursive(array $array1[, ...])
-
-	:param	array	$array1: Array in which to replace elements
-	:param	array	...: Array (or multiple ones) from which to extract elements
-	:returns:	Modified array
-	:rtype:	array
-
-	For more information, please refer to the `PHP manual for
-	array_replace_recursive() <http://php.net/array_replace_recursive>`_.
-
-	.. important:: Only PHP's native function can detect endless recursion.
-		Unless you are running PHP 5.3+, be careful with references!
-
 .. php:function:: hex2bin($data)
 
 	:param	array	$data: Hexadecimal representation of data
@@ -253,12 +230,3 @@ Function reference
 
 	For more information, please refer to the `PHP manual for hex2bin()
 	<http://php.net/hex2bin>`_.
-
-.. php:function:: quoted_printable_encode($str)
-
-	:param	string	$str: Input string
-	:returns:	8bit-encoded string
-	:rtype:	string
-
-	For more information, please refer to the `PHP manual for
-	quoted_printable_encode() <http://php.net/quoted_printable_encode>`_.
\ No newline at end of file
diff --git a/user_guide_src/source/general/hooks.rst b/user_guide_src/source/general/hooks.rst
index ffe3fef39..6cc3407a3 100644
--- a/user_guide_src/source/general/hooks.rst
+++ b/user_guide_src/source/general/hooks.rst
@@ -56,8 +56,8 @@ defined in your associative hook array:
 -  **params** Any parameters you wish to pass to your script. This item
    is optional.
 
-If you're running PHP 5.3+, you can also use lambda/anoymous functions
-(or closures) as hooks, with a simpler syntax::
+You can also use lambda/anoymous functions (or closures) as hooks, with
+a simpler syntax::
 
 	$hook['post_controller'] = function()
 	{
diff --git a/user_guide_src/source/general/routing.rst b/user_guide_src/source/general/routing.rst
index 515368099..b53a85d31 100644
--- a/user_guide_src/source/general/routing.rst
+++ b/user_guide_src/source/general/routing.rst
@@ -133,8 +133,8 @@ might be a good starting point.
 Callbacks
 =========
 
-If you are using PHP >= 5.3 you can use callbacks in place of the normal
-routing rules to process the back-references. Example::
+You can also use callbacks in place of the normal routing rules to process
+the back-references. Example::
 
 	$route['products/([a-zA-Z]+)/edit/(\d+)'] = function ($product_type, $id)
 	{
diff --git a/user_guide_src/source/general/security.rst b/user_guide_src/source/general/security.rst
index 8afdaca31..744a2c934 100644
--- a/user_guide_src/source/general/security.rst
+++ b/user_guide_src/source/general/security.rst
@@ -133,12 +133,7 @@ with that. Please read below.
    in PHP's own `Password Hashing <http://php.net/password>`_ functions.
 
    Please use them, even if you're not running PHP 5.5+, CodeIgniter
-   provides them for you as long as you're running at least PHP version
-   5.3.7 (and if you don't meet that requirement - please, upgrade).
-
-   If you're one of the really unlucky people who can't even upgrade to a
-   more recent PHP version, use `hash_pbkdf() <http://php.net/hash_pbkdf2>`,
-   which we also provide in our compatibility layer.
+   provides them for you.
 
 -  DO NOT ever display or send a password in plain-text format!
 
diff --git a/user_guide_src/source/libraries/encryption.rst b/user_guide_src/source/libraries/encryption.rst
index cac4b7921..377e650a9 100644
--- a/user_guide_src/source/libraries/encryption.rst
+++ b/user_guide_src/source/libraries/encryption.rst
@@ -13,7 +13,7 @@ unfortunately not always available on all systems.
 You must meet one of the following dependencies in order to use this
 library:
 
-- `OpenSSL <http://php.net/openssl>`_ (and PHP 5.3.3)
+- `OpenSSL <http://php.net/openssl>`_
 - `MCrypt <http://php.net/mcrypt>`_ (and `MCRYPT_DEV_URANDOM` availability)
 
 If neither of the above dependencies is met, we simply cannot offer
diff --git a/user_guide_src/source/libraries/form_validation.rst b/user_guide_src/source/libraries/form_validation.rst
index b03b544e2..5b9a74273 100644
--- a/user_guide_src/source/libraries/form_validation.rst
+++ b/user_guide_src/source/libraries/form_validation.rst
@@ -495,8 +495,7 @@ The above code would use the ``valid_username()`` method from your
 
 This is just an example of course, and callbacks aren't limited to models.
 You can use any object/method that accepts the field value as its' first
-parameter. Or if you're running PHP 5.3+, you can also use an anonymous
-function::
+parameter. You can also use an anonymous function::
 
 	$this->form_validation->set_rules(
 		'username', 'Username',
@@ -522,7 +521,7 @@ the second element of an array, with the first one being the rule name::
 		)
 	);
 
-Anonymous function (PHP 5.3+) version::
+Anonymous function version::
 
 	$this->form_validation->set_rules(
 		'username', 'Username',