Array
(
    [0] => Array
        (
            [0] => 1536
            [1] => 川上 健明
            [2] => tkawkaw@gmail.com
        )

    [1] => Array
        (
            [0] => 1537
            [1] => かわかみ たけあき
            [2] => tkawkaw@live.jp
        )

)

<pre>Array
(
    [0] => Array
        (
            [email] => tkawkaw@gmail.com
            [status] => user_exists
            [message] => 既に登録済みのユーザー
        )

    [1] => Array
        (
            [email] => tkawkaw@live.jp
            [status] => error
            [message] => エラー: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '2f5f14fb5a7264ee2594f99e284e2ad178bb488ca169f05940790dfa17fd4c52' for key 'invitations.email'
        )

)
</pre>