.. _php-implodeonearg:

.. _implode-one-arg:

Implode One Arg
+++++++++++++++

  `implode() <https://www.php.net/implode>`_ may be called with one arg. It is recommended to avoid it. 

Using two arguments makes it less surprising to new comers, and consistent with `explode() <https://www.php.net/explode>`_ syntax.

.. code-block:: php
   
   <?php
   
   $array = range('a', 'c');
   
   // empty string is the glue
   print implode('', $array);
   
   // only the array : PHP uses the empty string as glue. 
   // Avoid this
   print implode($array);
   
   ?>

See also `implode <https://www.php.net/implode>`_.


Suggestions
___________

* Add an empty string as first argument




Specs
_____

+--------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Short name   | Php/ImplodeOneArg                                                                                                                                                                                                                |
+--------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Rulesets     | :ref:`All <ruleset-All>`, :ref:`Changed Behavior <ruleset-Changed-Behavior>`, :ref:`PHP recommendations <ruleset-PHP-recommendations>`, :ref:`Suggestions <ruleset-Suggestions>`, :ref:`php-cs-fixable <ruleset-php-cs-fixable>` |
+--------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Exakat since | 1.7.7                                                                                                                                                                                                                            |
+--------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| PHP Version  | All                                                                                                                                                                                                                              |
+--------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Severity     | Minor                                                                                                                                                                                                                            |
+--------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Time To Fix  | Quick (30 mins)                                                                                                                                                                                                                  |
+--------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Precision    | Very high                                                                                                                                                                                                                        |
+--------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Available in | `Entreprise Edition <https://www.exakat.io/entreprise-edition>`_, `Exakat Cloud <https://www.exakat.io/exakat-cloud/>`_                                                                                                          |
+--------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+