array imap_fetchstructure(int imap_stream, int msg_number, int flags);This function causes a fetch of all the structured information for the given msg_number. The returned value is an object with following elements.
type, encoding, ifsubtype, subtype, ifdescription, description, ifid,
id, lines, bytes, ifparameters
It also returns an array of objects called parameters[]. This object has following properties.
attribute, value