Drop all PHP 5.3-related code

4 files changed, 7 insertions, 11 deletions

diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 84ed718cd..74fb15798 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -13,6 +13,7 @@ Release Date: Not Released
 
 -  Core
 
+   -  Removed ``$config['rewrite_short_tags']`` (irrelevant on PHP 5.4+).
    -  Removed previously deprecated ``$config['global_xss_filtering']``.
    -  Removed previously deprecated :doc:`Routing Class <general/routing>` methods ``fetch_directory()``, ``fetch_class()`` and ``fetch_method()`` (use the respective class properties instead).
    -  Removed previously deprecated :doc:`Config Library <libraries/config>` method ``system_url()`` (encourages insecure practices).
@@ -53,9 +54,10 @@ Release Date: Not Released
 
 -  :doc:`Database <database/index>` changes include:
 
+   -  Removed previously deprecated 'sqlite' driver (used for SQLite version 2; no longer shipped with PHP 5.4+).
+   -  Removed method ``db_set_charset()`` and the ability to change a connection character set at runtime.
    -  Changed method ``initialize()`` to return void and instead throw a ``RuntimeException`` in case of failure.
    -  Changed method ``db_connect()`` to always set the connection character set (if supported by the driver) and to fail if it can't.
-   -  Removed method ``db_set_charset()`` and the ability to change a connection character set at runtime.
 
    -  :doc:`Database Forge <database/forge>`:
 
diff --git a/user_guide_src/source/general/compatibility_functions.rst b/user_guide_src/source/general/compatibility_functions.rst
index 71559d0be..522e43f60 100644
--- a/user_guide_src/source/general/compatibility_functions.rst
+++ b/user_guide_src/source/general/compatibility_functions.rst
@@ -220,12 +220,3 @@ Function reference
 
 	For more information, please refer to the `PHP manual for
 	array_column() <http://php.net/array_column>`_.
-
-.. php:function:: hex2bin($data)
-
-	:param	array	$data: Hexadecimal representation of data
-	:returns:	Binary representation of the given data
-	:rtype:	string
-
-	For more information, please refer to the `PHP manual for hex2bin()
-	<http://php.net/hex2bin>`_.
diff --git a/user_guide_src/source/general/requirements.rst b/user_guide_src/source/general/requirements.rst
index 2e24d6d03..982a6014f 100644
--- a/user_guide_src/source/general/requirements.rst
+++ b/user_guide_src/source/general/requirements.rst
@@ -15,7 +15,7 @@ Currently supported databases are:
   - Oracle via the *oci8* and *pdo* drivers
   - PostgreSQL via the *postgre* and *pdo* drivers
   - MS SQL via the *mssql*, *sqlsrv* (version 2005 and above only) and *pdo* drivers
-  - SQLite via the *sqlite* (version 2), *sqlite3* (version 3) and *pdo* drivers
+  - SQLite via the *sqlite3* and *pdo* drivers
   - CUBRID via the *cubrid* and *pdo* drivers
   - Interbase/Firebird via the *ibase* and *pdo* drivers
   - ODBC via the *odbc* and *pdo* drivers (you should know that ODBC is actually an abstraction layer)
diff --git a/user_guide_src/source/installation/upgrade_320.rst b/user_guide_src/source/installation/upgrade_320.rst
index a2772e10c..95d9aab4d 100644
--- a/user_guide_src/source/installation/upgrade_320.rst
+++ b/user_guide_src/source/installation/upgrade_320.rst
@@ -161,6 +161,9 @@ CodeIgniter versions that have been removed in 3.2.0:
 
 - ``$config['allow_get_array']`` (use ``$_GET = array();`` instead)
 - ``$config['standardize_newlines']``
+- ``$config['rewrite_short_tags']`` (no impact; irrelevant on PHP 5.4+)
+
+- 'sqlite' database driver (no longer shipped with PHP 5.4+; 'sqlite3' is still available)
 
 - ``CI_Input::is_cli_request()`` (use :php:func:`is_cli()` instead)
 - ``CI_Router::fetch_directory()`` (use ``CI_Router::$directory`` instead)