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Error Identifier: argument.namedNotSupported

Every error reported by PHPStan has an error identifier. Here’s a list of all error identifiers. In PHPStan Pro you can see the error identifier next to each error and filter errors by their identifiers.

Code example #

<?php declare(strict_types = 1);

class Foo
{
	public function doFoo(): void
	{
		$this->doBar(i: 1);
	}

	public function doBar(int $i): void
	{
	}
}

Why is it reported? #

Named arguments were introduced in PHP 8.0. When PHPStan is configured to analyse code for a PHP version earlier than 8.0, using named arguments in function or method calls is not valid and will cause a fatal error at runtime.

In the example above, i: 1 uses the named argument syntax to pass the value 1 to the parameter $i. This syntax is not available in PHP versions before 8.0.

How to fix it #

Use positional arguments instead of named arguments:

 <?php declare(strict_types = 1);
 
 class Foo
 {
 	public function doFoo(): void
 	{
-		$this->doBar(i: 1);
+		$this->doBar(1);
 	}

 	public function doBar(int $i): void
 	{
 	}
 }

Or configure PHPStan to analyse the code for PHP 8.0 or later by setting the phpVersion option in the configuration file.

Non-ignorable error #

This error cannot be ignored using @phpstan-ignore or the ignoreErrors configuration. Non-ignorable errors indicate code that would cause a crash or a fatal error at runtime, or a fundamental problem in the analysed code that must be addressed.

Rules that report this error #

• PHPStan\Rules\Classes\ClassAttributesRule [1]
• PHPStan\Rules\Classes\ClassConstantAttributesRule [1]
• PHPStan\Rules\Classes\InstantiationRule [1]
• PHPStan\Rules\Constants\ConstantAttributesRule [1]
• PHPStan\Rules\EnumCases\EnumCaseAttributesRule [1]
• PHPStan\Rules\Functions\ArrowFunctionAttributesRule [1]
• PHPStan\Rules\Functions\CallCallablesRule [1]
• PHPStan\Rules\Functions\CallToFunctionParametersRule [1]
• PHPStan\Rules\Functions\CallUserFuncRule [1]
• PHPStan\Rules\Functions\ClosureAttributesRule [1]
• PHPStan\Rules\Functions\FunctionAttributesRule [1]
• PHPStan\Rules\Functions\ParamAttributesRule [1]
• PHPStan\Rules\Methods\CallMethodsRule [1]
• PHPStan\Rules\Methods\CallStaticMethodsRule [1]
• PHPStan\Rules\Methods\MethodAttributesRule [1]
• PHPStan\Rules\Properties\PropertyAttributesRule [1]
• PHPStan\Rules\Properties\PropertyHookAttributesRule [1]
• PHPStan\Rules\Traits\TraitAttributesRule [1]

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