# imap_msgno

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

imap_msgno — Gets the message sequence number for the given UID

### Descripción

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().

### Parámetros

`imap`

  An IMAP\Connection instance.

`message_uid`

  The message UID

### Valores devueltos

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

### Historial de cambios

Versión | Descripción
--- | ---
8.1.0 | The `imap` parameter expects an IMAP\Connection instance now; previously, a valid `imap` recurso was expected.

### Ver también

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