.. _structures-unknownpregoption:

.. _unkown-regex-options:

Unkown Regex Options
++++++++++++++++++++

  Regex support in PHP accepts the following list of options : ``eimsuxADJSUX``. 

All other letter used as option are not supported : depending on the situation, they may be ignored or raise an `error <https://www.php.net/error>`_.

.. code-block:: php
   
   <?php
   
   // all options are available
   if (preg_match('/\d+/isA', $string, $results)) { }
   
   // p and h are not regex options, p is double
   if (preg_match('/\d+/php', $string, $results)) { }
   
   ?>

See also `Pattern Modifiers <https://www.php.net/manual/en/reference.pcre.pattern.modifiers.php>`_.

Connex PHP features
-------------------

  + `regex <https://php-dictionary.readthedocs.io/en/latest/dictionary/regex.ini.html>`_


Suggestions
___________

* Remove the unknown options
* Replace the option with a valid one
* Fix any syntax typo in the regex




Specs
_____

+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Short name   | Structures/UnknownPregOption                                                                                                                                                            |
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Rulesets     | :ref:`All <ruleset-All>`, :ref:`Analyze <ruleset-Analyze>`, :ref:`CE <ruleset-CE>`, :ref:`Changed Behavior <ruleset-Changed-Behavior>`                                                  |
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Exakat since | 0.8.4                                                                                                                                                                                   |
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| PHP Version  | All                                                                                                                                                                                     |
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Severity     | Major                                                                                                                                                                                   |
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Time To Fix  | Slow (1 hour)                                                                                                                                                                           |
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Precision    | High                                                                                                                                                                                    |
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Available in | `Entreprise Edition <https://www.exakat.io/entreprise-edition>`_, `Community Edition <https://www.exakat.io/community-edition>`_, `Exakat Cloud <https://www.exakat.io/exakat-cloud/>`_ |
+--------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+