Gets the message sequence number for the given UID

# imap_msgno

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

imap_msgno — Gets the message sequence number for the given UID

### Description

imap_msgno(IMAP\Connection `$imap`, int `$message_uid`): int

Returns the message sequence number for the given `message_uid`.

This function is the inverse of imap_uid().

### Parameters

`imap`

  An IMAP\Connection instance.

`message_uid`

  The message UID

### Return Values

Returns the message sequence number for the given `message_uid`.

### Changelog

Version | Description
--- | ---
8.1.0 | The `imap` parameter expects an IMAP\Connection instance now; previously, a valid `imap` resource was expected.

### See Also

- imap_uid() - This function returns the UID for the given message sequence number

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