Error Identifier: interface.allowDynamicProperties
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);
#[\AllowDynamicProperties]
interface Foo
{
public function getName(): string;
}
Why is it reported? #
The #[\AllowDynamicProperties] attribute cannot be used with interfaces. Interfaces define contracts for classes to implement and cannot have properties of their own, so allowing dynamic properties on an interface is meaningless. PHP will emit a fatal error at runtime.
How to fix it #
Remove the #[\AllowDynamicProperties] attribute from the interface:
<?php declare(strict_types = 1);
-#[\AllowDynamicProperties]
interface Foo
{
public function getName(): string;
}
If implementing classes need dynamic properties, apply the attribute to those classes instead:
<?php declare(strict_types = 1);
interface Foo
{
public function getName(): string;
}
+#[\AllowDynamicProperties]
+class Bar implements Foo
+{
+ public function getName(): string
+ {
+ return 'bar';
+ }
+}
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]