Update docs accordingly to min PHP version requirement

Author: ogizanagi

book/forms.rst

@@ -95,8 +95,6 @@ from inside a controller::
 
             $form = $this->createFormBuilder($task)
                 ->add('task', TextType::class)
-                // If you use PHP 5.3 or 5.4 you must use
-                // ->add('task', 'Symfony\Component\Form\Extension\Core\Type\TextType')
                 ->add('dueDate', DateType::class)
                 ->add('save', SubmitType::class, array('label' => 'Create Task'))
                 ->getForm();
@@ -1978,4 +1976,4 @@ Learn more from the Cookbook
 .. _`form_div_layout.html.twig`: https://github.com/symfony/symfony/blob/master/src/Symfony/Bridge/Twig/Resources/views/Form/form_div_layout.html.twig
 .. _`Cross-site request forgery`: http://en.wikipedia.org/wiki/Cross-site_request_forgery
 .. _`view on GitHub`: https://github.com/symfony/symfony/tree/master/src/Symfony/Bundle/FrameworkBundle/Resources/views/Form
-.. _`2.8 UPGRADE Log`: https://github.com/symfony/symfony/blob/2.8/UPGRADE-2.8.md#form
+.. _`2.8 UPGRADE Log`: https://github.com/symfony/symfony/blob/2.8/UPGRADE-2.8.md#form

book/security.rst

@@ -510,8 +510,6 @@ else, you'll want to encode their passwords. The best algorithm to use is
             // ...
         ));
 
-.. include:: /cookbook/security/_ircmaxwell_password-compat.rst.inc
-
 Of course, your users' passwords now need to be encoded with this exact algorithm.
 For hardcoded users, you can use an `online tool`_, which will give you something
 like this:

components/dom_crawler.rst

@@ -300,12 +300,6 @@ and :phpclass:`DOMNode` objects:
 
     The ``html`` method is new in Symfony 2.3.
 
-    .. caution::
-
-        Due to an issue in PHP, the ``html()`` method returns wrongly decoded HTML
-        entities in PHP versions lower than 5.3.6 (for example, it returns ``•``
-        instead of ``•``).
-
 Links
 ~~~~~
 

components/form/introduction.rst

@@ -398,8 +398,6 @@ is created from the form factory.
 
         $form = $formFactory->createBuilder()
             ->add('task', TextType::class)
-            // If you use PHP 5.3 or 5.4, you must use
-            // ->add('task', 'Symfony\Component\Form\Extension\Core\Type\TextType')
             ->add('dueDate', DateType::class)
             ->getForm();
 
@@ -426,8 +424,6 @@ is created from the form factory.
 
                 $form = $this->createFormBuilder()
                     ->add('task', TextType::class)
-                    // If you use PHP 5.3 or 5.4, you must use
-                    // ->add('task', 'Symfony\Component\Form\Extension\Core\Type\TextType')
                     ->add('dueDate', DateType::class)
                     ->getForm();
 
@@ -439,8 +435,7 @@ is created from the form factory.
 
 As you can see, creating a form is like writing a recipe: you call ``add``
 for each new field you want to create. The first argument to ``add`` is the
-name of your field, and the second is the fully qualified class name. If you
-use PHP 5.5 or above, you can use ``::class`` constant of a form type. The Form
+name of your field, and the second is the fully qualified class name. The Form
 component comes with a lot of :doc:`built-in types </reference/forms/types>`.
 
 Now that you've built your form, learn how to :ref:`render <component-form-intro-rendering-form>`

components/var_dumper/introduction.rst

@@ -145,11 +145,6 @@ Example::
         }
     }
 
-.. tip::
-
-    If you still use PHP 5.3, you can extend the
-    :class:`Symfony\\Component\\VarDumper\\Test\\VarDumperTestClass` instead.
-
 Dump Examples and Output
 ------------------------
 

contributing/code/patches.rst

@@ -14,14 +14,14 @@ Before working on Symfony, setup a friendly environment with the following
 software:
 
 * Git;
-* PHP version 5.3.9 or above;
+* PHP version 5.5.9 or above;
 * `PHPUnit`_ 4.2 or above.
 
 .. caution::
 
-   Before Symfony 2.7, the minimal PHP version was 5.3.3. Please keep
-   this in mind, if you are working on a bug fix for earlier versions
-   of Symfony.
+   Before Symfony 2.7, the minimal PHP version was 5.3.3. Before Symfony 3.0,
+   minimal version was 5.3.9. Please keep this in mind, if you are working on a
+   bug fix for earlier versions of Symfony.
 
 Configure Git
 ~~~~~~~~~~~~~

cookbook/configuration/micro-kernel-trait.rst

@@ -11,12 +11,6 @@ as one file? This is possible thanks to the new
 you to start with a tiny application, and then add features and structure as you
 need to.
 
-.. note::
-
-    The MicroKernelTrait requires PHP 5.4. However, there's nothing special about
-    this trait. If you're using PHP 5.3, simply copy its methods into *your* kernel
-    class to get the same functionality.
-
 A Single-File Symfony Application
 ---------------------------------
 

cookbook/deployment/azure-website.rst

@@ -96,8 +96,8 @@ and how to properly configure PHP for a production environment.
 Configuring the latest PHP Runtime
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-Even though Symfony only requires PHP 5.3.9 to run, it's always recommended
-to use the most recent PHP version whenever possible. PHP 5.3 is no longer
+Even though Symfony only requires PHP 5.5.9 to run, it's always recommended
+to use the most recent PHP version whenever possible. Earlier versions are no longer
 supported by the PHP core team, but you can update it easily in Azure.
 
 To update your PHP version on Azure, go to the **Configure** tab of the control

cookbook/security/_ircmaxwell_password-compat.rst.inc

@@ -291,8 +291,6 @@ name ``our_db_provider`` isn't important: it just needs to match the value
 of the ``provider`` key under your firewall. Or, if you don't set the ``provider``
 key under your firewall, the first "user provider" is automatically used.
 
-.. include:: /cookbook/security/_ircmaxwell_password-compat.rst.inc
-
 Creating your First User
 ~~~~~~~~~~~~~~~~~~~~~~~~
 

cookbook/security/entity_provider.rst

@@ -69,7 +69,7 @@ Before You Start
 
 Reading about how to create a framework is not enough. You will have to follow
 along and actually type all the examples included in this tutorial. For that,
-you need a recent version of PHP (5.3.9 or later is good enough), a web server
+you need a recent version of PHP (5.5.9 or later is good enough), a web server
 (like Apache, NGinx or PHP's built-in web server), a good knowledge of PHP and
 an understanding of Object Oriented programming.
 
@@ -109,9 +109,8 @@ start with the simplest web application we can think of in PHP::
 
     printf('Hello %s', $input);
 
-If you have PHP 5.4, you can use the PHP built-in server to test this great
-application in a browser (``http://localhost:4321/index.php?name=Fabien``).
-Otherwise, use your own server (Apache, Nginx, etc.):
+You can use the PHP built-in server to test this great
+application in a browser (``http://localhost:4321/index.php?name=Fabien``):
 
 .. code-block:: bash
 

create_framework/introduction.rst

@@ -354,11 +354,6 @@ for the hash algorithm.
 Using the BCrypt Password Encoder
 ---------------------------------
 
-.. caution::
-
-    To use this encoder, you either need to use PHP Version 5.5 or install
-    the `ircmaxell/password-compat`_ library via Composer.
-
 .. configuration-block::
 
     .. code-block:: yaml

reference/configuration/security.rst

@@ -21,16 +21,11 @@ Below is the list of required and optional requirements.
 Required
 --------
 
-* PHP needs to be a minimum version of PHP 5.3.9
+* PHP needs to be a minimum version of PHP 5.5.9
 * JSON needs to be enabled
 * ctype needs to be enabled
 * Your ``php.ini`` needs to have the ``date.timezone`` setting
 
-.. caution::
-
-    Be aware that Symfony has some known limitations when using PHP 5.3.16.
-    For more information see the `Requirements section of the README`_.
-
 Optional
 --------