$test = imap_headerinfo($imap, "1");
print_r($test);

stdClass Object ( [date] => Tue, 17 Jul 2007 12:13:39 +0200 [Date] => Tue, 17 Jul 2007 12:13:39 +0200 [subject] => test [Subject] => test [message_id] => <6bb81710707170313u281c66f2hba0e751769ad2b36@mail.gmail.com> [toaddress] => daniel_stroem@slotshaven.com [to] => Array ( [0] => stdClass Object ( [mailbox] => daniel_stroem [host] => slotshaven.com ) ) [fromaddress] => =?ISO-8859-1?Q?Daniel_S=F8rensen?= [from] => Array ( [0] => stdClass Object ( [personal] => =?ISO-8859-1?Q?Daniel_S=F8rensen?= [mailbox] => danielss89 [host] => gmail.com ) ) [reply_toaddress] => =?ISO-8859-1?Q?Daniel_S=F8rensen?= [reply_to] => Array ( [0] => stdClass Object ( [personal] => =?ISO-8859-1?Q?Daniel_S=F8rensen?= [mailbox] => danielss89 [host] => gmail.com ) ) [senderaddress] => =?ISO-8859-1?Q?Daniel_S=F8rensen?= [sender] => Array ( [0] => stdClass Object ( [personal] => =?ISO-8859-1?Q?Daniel_S=F8rensen?= [mailbox] => danielss89 [host] => gmail.com ) ) [Recent] => [Unseen] => [Flagged] => [Answered] => [Deleted] => [Draft] => [Msgno] => 1 [MailDate] => 17-Jul-2007 13:37:25 +0200 [Size] => 2561 [udate] => 1184672245 )