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Error Identifier: phpstanPlayground.staticWithoutType

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);

function counter(): int
{
	static $count;
	$count++;

	return $count;
}

Why is it reported? #

A static variable is declared without a @var PHPDoc type annotation. Static variables persist their value across function calls, and without a type annotation PHPStan cannot reliably infer their type throughout the analysis.

This rule is specific to the PHPStan playground and cannot be ignored.

How to fix it #

Add a @var PHPDoc tag above the static variable declaration:

 <?php declare(strict_types = 1);
 
 function counter(): int
 {
+	/** @var int $count */
 	static $count;
 	$count++;

 	return $count;
 }

When declaring multiple static variables in a single statement, specify the type for each variable by name:

 <?php declare(strict_types = 1);
 
 function example(): void
 {
+	/** @var int $a */
+	/** @var string $b */
 	static $a, $b;
 }

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\Playground\StaticVarWithoutTypeRule [1]

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