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The Override attribute

(PHP 8 >= 8.3.0)

Introduzione

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

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

The attribute cannot be used on the __construct() method, which is exempt from signature checks.

Sommario della classe

#[\Attribute]
final class Override {
/* Metodi */
public __construct()
}

Log delle modifiche

Versione Descrizione
8.5.0 Override can be applied to properties.

Esempi

Example #1 Usage with methods

<?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

Example #2 Usage with properties

<?php

class Base {
protected string $foo;
}

final class Extended extends Base {
#[\Override]
protected string $boo;
}

?>

Output of the above example in PHP 8.5 is similar to:

Fatal error: Extended::$boo has #[\Override] attribute, but no matching parent property exists

Vedere anche:

Indice dei contenuti