PHP 5.4.31 Released

imap_uid

(PHP 4, PHP 5)

imap_uid指定したメッセージシーケンス番号の UID を返す

説明

int imap_uid ( resource $imap_stream , int $msg_number )

この関数は、指定したメッセージシーケンス番号の UID を返します。 メッセージ番号はメールボックスの内容を変更する度に変わる可能性が ありますが、UID はユニークな ID であり時間が経過しても変わりません。

この関数は、imap_msgno() の逆関数です。

パラメータ

imap_stream

imap_open() が返す IMAP ストリーム。

msg_number

メッセージ番号。

返り値

指定したメッセージの UID を返します。

注意

注意:

この関数は、POP3 メールボックスではサポートされません。

参考

  • imap_msgno() - 指定した UID のメッセージ番号を返す

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User Contributed Notes 5 notes

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2
steve_foley at excite dot com
11 years ago
Please note that message_id in the header is NOT the UID - and its dangerous to use as many mail progs don't put a message id in
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1
Maikel
4 years ago
Be aware that the uid is unique in a single mailbox. That means a message can have as much uids as mailboxes
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0
Andreas Seeger
6 years ago
The uid will change in case of unsing imap_expunge. Be shure that
all work ist done before using imap_expunge.
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-1
roger at sdr dot com dot au
6 years ago
A little quirk of UIDs in a PUBLIC folder in MDaemon (and perhaps other servers?). The UIDs may be unsynchronised between users if the server's option to store flags on a per-user basis is turned on. That is, a message may have a UID of 5 for one user (meaning it was the 5th message to enter the box) but 3 for another user (who perhaps subscribed to the box later). If this is a problem, turn off the per-user option for the mailbox.
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anon et mouse
5 years ago
clarification for Andreas' note about imap_expunge()...

imap_expunge() does indeed change the UID, but only *after* the IMAP stream has closed and then reconnects.

You can use imap_expunge() as many times as you want within one IMAP stream (no reconnects) and the UID stays the same while the Msgno will change with imap_delete() followed by imap_expunge().
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