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メソッドをcallable型の引数で受け渡す方法!

Posted at

ここでかなり詰まってしまったためメモ!

<?php
class Hello
{
    public function say(string $name): void
    {
        echo "Hello! ${name}!";
    }
}
class Callback
{
    public function do(callable $callback): void
    {
        $callback('ららっく');
    }
}

$hello = new Hello();
$callback = new Callback();

// これでOK!
$callback->do(function ($name) use ($hello): void
{
    $hello->say($name);
});  // Hello! ららっく!

useを忘れてて一生悩んでました...
もっと良い方法がございましたらご教示いただければ幸いです!

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