KT-MyPage/app/Kintone/File.php

<?php

namespace App\Kintone;

class File
{

    public string $contentType;
    public string $fileKey;
    public string $name;
    public int $size;

    public function __construct($param = null)
    {
        if ($param !== null) {
            $this->contentType = data_get($param, "contentType", "");
            $this->fileKey = data_get($param, "fileKey", "");
            $this->name = data_get($param, "name", "");
            $this->size = (int)data_get($param, "size", 0);
        }
    }
}