(PHP 4, PHP 5, PHP 7)
This function returns the UID for the given message sequence number
int imap_uid ( resource $imap_stream, int $msg_number )
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().
Parameters:
imap_stream
An IMAP stream returned by imap_open().
msg_number
The message number.
Returns:
The UID of the given message.
Notes:
This function is not supported by POP3 mailboxes.
See also:
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