For me, this function returns FALSE if uid does not match a message in the current mailbox.
(PHP 4, PHP 5, PHP 7)
imap_msgno — Gets the message sequence number for the given UID
$imap_stream
, int $uid
) : int
Returns the message sequence number for the given
uid.
This function is the inverse of imap_uid().
Returns the message sequence number for the given
uid.
For me, this function returns FALSE if uid does not match a message in the current mailbox.
<p>Note that imap_msgno() doesn't ever give you an error message. So, assuming you're passing about message numbers as a UID, be warned that:</p>
<p>$msguid = false;<br>
$msgno = imap_msgno( $your_initialized_connection, $msguid );</p>
<p>Will leave ($msgno==1) - this is probably not what you want, and it's surprisingly easy to miss while you're doing the basic testing.</p>