===================== Rule single_quote

Convert double quotes to single quotes for simple strings.

Warning

This rule is CONFIGURABLE

You can configure this rule using the following option:
``strings_containing_single_quote_chars``.

Configuration
-------------

``strings_containing_single_quote_chars``

Whether to fix double-quoted strings that contains single-quotes.

Allowed types: bool

Default value: false

Examples

Example #1

*Default* configuration.

.. code-block:: diff

   --- Original
   +++ New
    <?php

   -$a = "sample";
   +$a = 'sample';
    $b = "sample with 'single-quotes'";

Example #2

With configuration: ['strings_containing_single_quote_chars' => true].

.. code-block:: diff

--- Original +++ New <?php

-$a = "sample"; -$b = "sample with 'single-quotes'"; +$a = 'sample'; +$b = 'sample with 'single-quotes'';

Rule sets

The rule is part of the following rule sets:

• @PhpCsFixer <./../../ruleSets/PhpCsFixer.rst>_
• @Symfony <./../../ruleSets/Symfony.rst>_

References

• Fixer class: PhpCsFixer\\Fixer\\StringNotation\\SingleQuoteFixer <./../../../src/Fixer/StringNotation/SingleQuoteFixer.php>_
• Test class: PhpCsFixer\\Tests\\Fixer\\StringNotation\\SingleQuoteFixerTest <./../../../tests/Fixer/StringNotation/SingleQuoteFixerTest.php>_

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