array imap_fetch_overview(int imap_stream, string sequence);This function fetches a mail header and returns an overview of its contents. It will return an array of objects describing one message header each:
subject - the messages subject
from - who sent it
date - when was it sent
message_id - Message-ID
references - is a reference to this message id
size - size in bytes
uid - UID the message has in the mailbox
msgno - message sequence number in the maibox
recent - this message is flagged as recent
flagged - this message is flagged
answered - this message is flagged as answered
deleted - this message is flagged for deletion
seen - this message is flagged as already read
draft - this message is flagged as being a draft