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Error Identifier: method.callToAbstract

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);

abstract class Foo
{
	abstract public function doSomething(): void;
}

class Bar extends Foo
{
	public function doSomething(): void
	{
		parent::doSomething(); // error: Cannot call abstract method Foo::doSomething().
	}
}

Why is it reported? #

Abstract methods have no implementation in the declaring class. Calling an abstract method via parent:: will result in a fatal error at runtime because there is no method body to execute. This typically happens when a child class overrides an abstract method and mistakenly calls parent:: on it.

How to fix it #

Remove the call to the abstract parent method. If shared logic is needed, move it to a non-abstract method in the parent class.

 abstract class Foo
 {
 	abstract public function doSomething(): void;
+
+	protected function sharedLogic(): void
+	{
+		// shared implementation
+	}
 }

 class Bar extends Foo
 {
 	public function doSomething(): void
 	{
-		parent::doSomething();
+		$this->sharedLogic();
 		// ...
 	}
 }

How to ignore this error #

You can use the identifier method.callToAbstract to ignore this error using a comment:

// @phpstan-ignore method.callToAbstract
codeThatProducesTheError();

You can also use only the identifier key to ignore all errors of the same type in your configuration file in the ignoreErrors parameter:

parameters:
	ignoreErrors:
		-
			identifier: method.callToAbstract

Rules that report this error #

• PHPStan\Rules\Methods\CallStaticMethodsRule [1]
• PHPStan\Rules\Methods\StaticMethodCallableRule [1]

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