(PHP 3 >= 3.0.3, PHP 4, PHP 5)
imap_msgno -- 
     This function returns the message sequence number for the given
     UID
    
Description
int 
imap_msgno ( resource imap_stream, int uid )
     This function returns the message sequence number for the given
     uid. It is the inverse of 
     imap_uid().
    
     See also imap_uid().