Behavior Changes

.. _v434-redirect-status-code:

Redirect Status Code

Due to a bug, in previous versions, when using HTTP/1.1 or later the status code of the actual redirect response might be changed even if a status code was specified. For example, for a GET request, 302 would change to 307; for a POST request, 307 and 302 would change to 303.
Starting with this version, if you specify a status code in :ref:redirect <response-redirect-status-code>, that code will always be used in the response.
The default code for GET requests has been corrected from 307 to 302 when using HTTP/1.1 or later.
The default code for HEAD and OPTIONS requests has been corrected from 303 to 307 when using HTTP/1.1 or later.
In $routes->addRedirect(), 302 is specified by default. Therefor 302 will always be used when you don't specify a status code. In previous versions, 302 might be changed.

.. _v434-forge-modifycolumn:

The :ref:$forge->modifyColumn() <db-forge-modifyColumn> has been fixed. Due to a bug, in previous versions, SQLite3/Postgres/SQLSRV might change NULL/NOT NULL unpredictably.
In previous versions, the OCI8 driver did not change NULL/NOT NULL when you don't specify the null key.
Now in all database drivers $forge->modifyColumn() always sets NULL when you don't specify the null key.
The NULL/NOT NULL change may still be unexpectedly, it is recommended to always specify the null key.

Deprecations

Text Helper: :php:func:random_string()'s type basic, md5, and sha1 are deprecated. They are not cryptographically secure.

Bugs Fixed

CURLRequest: Fixed a bug where the response class was shared between requests.

See the repo's CHANGELOG.md <https://github.com/codeigniter4/CodeIgniter4/blob/develop/CHANGELOG.md>_ for a complete list of bugs fixed.