===================================
Rule ``blank_line_after_namespace``
===================================

There MUST be one blank line after the namespace declaration.

Examples
--------

Example #1
~~~~~~~~~~

.. code-block:: diff

   --- Original
   +++ New
    <?php
    namespace Sample\Sample;

   -
    $a;

Example #2
~~~~~~~~~~

.. code-block:: diff

   --- Original
   +++ New
    <?php
    namespace Sample\Sample;
   +
    Class Test{}

Rule sets
---------

The rule is part of the following rule sets:

- `@PER <./../../ruleSets/PER.rst>`_
- `@PER-CS <./../../ruleSets/PER-CS.rst>`_
- `@PER-CS1.0 <./../../ruleSets/PER-CS1.0.rst>`_
- `@PER-CS2.0 <./../../ruleSets/PER-CS2.0.rst>`_
- `@PSR2 <./../../ruleSets/PSR2.rst>`_
- `@PSR12 <./../../ruleSets/PSR12.rst>`_
- `@PhpCsFixer <./../../ruleSets/PhpCsFixer.rst>`_
- `@Symfony <./../../ruleSets/Symfony.rst>`_

References
----------

- Fixer class: `PhpCsFixer\\Fixer\\NamespaceNotation\\BlankLineAfterNamespaceFixer <./../../../src/Fixer/NamespaceNotation/BlankLineAfterNamespaceFixer.php>`_
- Test class: `PhpCsFixer\\Tests\\Fixer\\NamespaceNotation\\BlankLineAfterNamespaceFixerTest <./../../../tests/Fixer/NamespaceNotation/BlankLineAfterNamespaceFixerTest.php>`_

The test class defines officially supported behaviour. Each test case is a part of our backward compatibility promise.