.. _php-php73lastemptyargument:

.. _php-7.3-last-empty-argument:

PHP 7.3 Last Empty Argument
+++++++++++++++++++++++++++

  PHP allows the last element of any functioncall to be empty. The argument is then not send.

This was introduced in PHP 7.3, and is not backward compatible.

The last empty line is easier on the VCS, allowing clearer text diffs.

.. code-block:: php
   
   <?php
   
   function foo($a, $b) {
       print_r(func_get_args());
   }
   
   
   foo(1, 
       2, 
       );
   
   foo(1);
   
   
   ?>

See also `Allow a trailing comma in function calls <https://wiki.php.net/rfc/trailing-comma-function-calls>`_ and `Trailing commas <https://www.puppetcookbook.com/posts/trailing-commas.html>`_.


Specs
_____

+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Short name       | Php/PHP73LastEmptyArgument                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Rulesets         | :ref:`All <ruleset-All>`, :ref:`Changed Behavior <ruleset-Changed-Behavior>`, :ref:`CompatibilityPHP53 <ruleset-CompatibilityPHP53>`, :ref:`CompatibilityPHP54 <ruleset-CompatibilityPHP54>`, :ref:`CompatibilityPHP55 <ruleset-CompatibilityPHP55>`, :ref:`CompatibilityPHP56 <ruleset-CompatibilityPHP56>`, :ref:`CompatibilityPHP70 <ruleset-CompatibilityPHP70>`, :ref:`CompatibilityPHP71 <ruleset-CompatibilityPHP71>`, :ref:`CompatibilityPHP72 <ruleset-CompatibilityPHP72>` |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Exakat since     | 1.1.7                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| PHP Version      | With PHP 7.3 and more recent                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Severity         | Critical                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Time To Fix      | Quick (30 mins)                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Changed Behavior | PHP 7.3 - `More <https://php-changed-behaviors.readthedocs.io/en/latest/behavior/.html>`__                                                                                                                                                                                                                                                                                                                                                                                           |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Precision        | Very high                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Features         | class                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Available in     | `Entreprise Edition <https://www.exakat.io/entreprise-edition>`_, `Exakat Cloud <https://www.exakat.io/exakat-cloud/>`_                                                                                                                                                                                                                                                                                                                                                              |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+