imap_undelete

(PHP 4, PHP 5, PHP 7, PHP 8)

imap_undelete — Unmark the message which is marked deleted

imap_undelete ( resource $imap , string $message_num , int $flags = 0 ) : bool

Removes the deletion flag for a specified message, which is set by imap_delete() or imap_mail_move().

成功时返回 true，或者在失败时返回 false。