[#8734][#8736] Adding missing installation details

Author: weaverryan

templating/PHP.rst

@@ -17,8 +17,13 @@ templates with PHP more powerful.
 Rendering PHP Templates
 -----------------------
 
-If you want to use the PHP templating engine, first, make sure to enable it in
-your application configuration file:
+If you want to use the PHP templating engine, first install the templating component:
+
+.. code-block:: terminal
+
+    $ composer require templating
+
+Next, enable the php engine:
 
 .. configuration-block::
 

templating/debug.rst

@@ -9,8 +9,14 @@ How to Dump Debug Information in Twig Templates
 
 When using PHP templates, you can use the
 :ref:`dump() function from the VarDumper component <components-var-dumper-dump>`
-if you need to quickly find the value of a variable passed. This is useful,
-for example, inside your controller::
+if you need to quickly find the value of a variable passed. First, make sure it
+is installed:
+
+.. code-block:: terminal
+
+    $ composer require var-dumper
+
+This is useful, for example, inside your controller::
 
     // src/Controller/ArticleController.php
     namespace App\Controller;