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#############################
Upgrading from 3.1.2 to 3.1.3
#############################
Before performing an update you should take your site offline by
replacing the index.php file with a static one.
Step 1: Update your CodeIgniter files
=====================================
Replace all files and directories in your *system/* directory.
.. note:: If you have any custom developed files in these directories,
please make copies of them first.
Step 2: Remove usage of nice_date() helper (deprecation)
========================================================
The :doc:`Date Helper <../helpers/date_helper>` function ``nice_date()`` is
no longer useful since the introduction of PHP's `DateTime classes
<https://secure.php.net/datetime>`_
You can replace it with the following:
::
DateTime::createFromFormat($input_format, $input_date)->format($desired_output_format);
Thus, ``nice_date()`` is now deprecated and scheduled for removal in
CodeIgniter 3.2+.
.. note:: The function is still available, but you're strongly encouraged
to remove its usage sooner rather than later.
Step 3: Remove usage of $config['standardize_newlines']
=======================================================
The :doc:`Input Library <../libraries/input>` would optionally replace
occurrences of `\r\n`, `\r`, `\n` in input data with whatever the ``PHP_EOL``
value is on your system - if you've set ``$config['standardize_newlines']``
to ``TRUE`` in your *application/config/config.php*.
This functionality is now deprecated and scheduled for removal in
CodeIgniter 3.2.+.
.. note:: The functionality is still available, but you're strongly
encouraged to remove its usage sooner rather than later.
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