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Error Identifier: property.hookBodyInInterface

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);

interface HasName
{
	public string $firstName {
		get {
			return 'Foo';
		}
	}
}

Why is it reported? #

Interface property hooks cannot have bodies. Properties declared in interfaces are implicitly abstract, meaning their hooks must be declared without a body. The implementing class is responsible for providing the hook implementation.

This is a PHP language constraint introduced with property hooks in PHP 8.4.

How to fix it #

Remove the hook body and declare only the hook signature:

 <?php declare(strict_types = 1);
 
 interface HasName
 {
-	public string $firstName {
-		get {
-			return 'Foo';
-		}
-	}
+	public string $firstName { get; }
 }

Then provide the implementation in a class:

<?php declare(strict_types = 1);

class User implements HasName
{
	public string $firstName {
		get {
			return 'Foo';
		}
	}
}

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\Properties\PropertiesInInterfaceRule [1]

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