docs: add docs

Author: kenjis

user_guide_src/source/changelogs/v4.3.0.rst

@@ -323,6 +323,8 @@ Others
 - **Config:** Added ``Config\Session`` class to handle session configuration.
 - **Debug:** Kint has been updated to 5.0.1.
 - **Request:** Added new ``$request->getRawInputVar()`` method to return a specified variable from raw stream. See :ref:`Retrieving Raw data <incomingrequest-retrieving-raw-data>`.
+- **Request:** Added new ``$request->is()`` method to to query the request type.
+  See :ref:`Determining Request Type <incomingrequest-is>`.
 
 Message Changes
 ***************

user_guide_src/source/incoming/incomingrequest.rst

@@ -40,6 +40,20 @@ be checked with the ``isAJAX()`` and ``isCLI()`` methods:
     which in some cases is not sent by default in XHR requests via JavaScript (i.e., fetch).
     See the :doc:`AJAX Requests </general/ajax>` section on how to avoid this problem.
 
+.. _incomingrequest-is:
+
+is()
+====
+
+    .. versionadded:: 4.3.0
+
+Since v4.3.0, you can use the ``is()`` method. It returns boolean.
+
+.. literalinclude:: incomingrequest/040.php
+
+getMethod()
+===========
+
 You can check the HTTP method that this request represents with the ``getMethod()`` method:
 
 .. literalinclude:: incomingrequest/005.php

user_guide_src/source/incoming/incomingrequest/040.php

@@ -0,0 +1,16 @@
+<?php
+
+// Checks HTTP methods. Returns boolean.
+$request->is('get');
+$request->is('post');
+$request->is('put');
+$request->is('delete');
+$request->is('head');
+$request->is('patch');
+$request->is('options');
+
+// Checks if it is an AJAX request.
+$request->is('ajax');
+
+// Checks if it is a JSON request.
+$request->is('json');