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Rule single_quote

Convert double quotes to single quotes for simple strings.

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.

--- Original
+++ New
 <?php

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

Example #2

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

--- 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

• @Symfony

References

• Fixer class: PhpCsFixer\Fixer\StringNotation\SingleQuoteFixer

• Test class: PhpCsFixer\Tests\Fixer\StringNotation\SingleQuoteFixerTest

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