Predefined Attributes
PHP Manual

The Override attribute

Introduction

This attribute is used to indicate that a method is intended to override a method of a parent class or that it implements a method defined in an interface.

If no method with the same name exists in a parent class or in an implemented interface a compile-time error will be emitted.

Class synopsis

final Override
/* Methods */
public __construct()

Examples

<?php

class Base {
    protected function foo(): void {}
}

final class Extended extends Base {
    #[\Override]
    protected function boo(): void {}
}

?>

Output of the above example in PHP 8.3 is similar to:

Fatal error: Extended::boo() has #[\Override] attribute, but no matching parent method exists
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