no_unreachable_default_argument_value.rst

Rule no_unreachable_default_argument_value

In function arguments there must not be arguments with default values before non-default ones.

Warning

Using this rule is risky

Modifies the signature of functions; therefore risky when using systems (such as some Symfony components) that rely on those (for example through reflection).

Examples

Example #1

--- Original
+++ New
 <?php
-function example($foo = "two words", $bar) {}
+function example($foo, $bar) {}

Rule sets

The rule is part of the following rule sets:

• @PER-CS1.0:risky
• @PER-CS2.0:risky
• @PER-CS:risky
• @PER:risky
• @PHP80Migration:risky
• @PHP82Migration:risky
• @PSR12:risky
• @PhpCsFixer:risky
• @Symfony:risky

References

• Fixer class: PhpCsFixer\Fixer\FunctionNotation\NoUnreachableDefaultArgumentValueFixer
• Test class: PhpCsFixer\Tests\Fixer\FunctionNotation\NoUnreachableDefaultArgumentValueFixerTest

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