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@ 2023-07-15T08:24:56Z

<?php
abstract class DataMapper
{
    // 削除
    public function delete(array $conditions): int
    {
        // 削除に失敗して例外が発生したと仮定
        throw new RangeException('削除に失敗しました');
        // 本来は削除に成功した行数を rowCount で得て返す
        return 1;
    }
}

class CommentMapper extends DataMapper
{
    // コメント削除
    public function destroyComment(int $comment_id): int
    {
        try {
            $conditions = ['id'=>$comment_id];
            $rowCount = parent::delete($conditions);
            return $rowCount;
        } catch (Exception $e) {
            echo $e->getMessage();
        }
    }
}

class CommentController
{
    public function destroyAction(int $comment_id): void
    {
        $commentMapper = new CommentMapper();
        $rowCount = $commentMapper->destroyComment($comment_id);
        var_dump($rowCount);
    }
}

$commentController = new CommentController();
$commentController->destroyAction(1);

Output for git.master_jit, git.master, rfc.property-hooks: 削除に失敗しました Fatal error: Uncaught TypeError: CommentMapper::destroyComment(): Return value must be of type int, none returned in /in/i5lbv:26 Stack trace: #0 /in/i5lbv(34): CommentMapper->destroyComment(1) #1 /in/i5lbv(40): CommentController->destroyAction(1) #2 {main} thrown in /in/i5lbv on line 26
Process exited with code 255.

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2022-12-01 RFC: Property hooks - included in PHP 8.4
2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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