imap_uid

(PHP 4, PHP 5, PHP 7)

imap_uid — This function returns the UID for the given message sequence number

说明

imap_uid ( resource $imap_stream , int $msg_number ) : int

This function returns the UID for the given message sequence number. An UID is a unique identifier that will not change over time while a message sequence number may change whenever the content of the mailbox changes.

This function is the inverse of imap_msgno().

参数

imap_stream: 由 imap_open() 返回的 IMAP 流。
msg_number: The message number.

返回值

The UID of the given message.

注释

Note:
This function is not supported by POP3 mailboxes.

参见

imap_msgno() - Gets the message sequence number for the given UID