CakeFest 2025 Madrid: The Official CakePHP Conference

Override アトリビュート

(PHP 8 >= 8.3.0)

はじめに

クラス概要

final class Override {
/* メソッド */
public __construct()
}

<?php

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

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

?>

上の例の PHP 8.3 での出力は、たとえば以下のようになります。:

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

目次

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User Contributed Notes 1 note

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alxrie at gmail dot com
4 days ago
The magic method __construct() can't be marked with Override attribute.

For example:

class Base {
public $val;
public function __construct() {
$this->val = 0;
}
}

class Derived extends Base {
#[\Override]
public function __construct() {
parent::__construct();
++$this->val;
}
}

In PHP 8.3 this example raises an error message

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