If I open multiple imap connections to different servers I can not use imap_status on the first server opened, but other imap calls (example: imap_mailboxmsginfo) will work. This seems similar to bug 8424, but involving multiple servers.

Code example:
<?
	$conn1 = imap_open("{host1:143}INBOX","user1","password1");
	var_dump($conn1);
	$status1 = imap_status($conn1,"{host1:143}INBOX",SA_ALL);
	var_dump($status1);

	$conn2 = imap_open("{host2:143}INBOX","user2","password2");
        var_dump($conn2);
        $status2 = imap_status($conn2,"{host2:143}INBOX",SA_ALL);
        var_dump($status2);

	$status1 = imap_status($conn1,"{host1:143}INBOX",SA_ALL);
        var_dump($status1);

	$info1 = imap_mailboxmsginfo($conn1);
	var_dump($info1);

	imap_close ($conn1);
	imap_close ($conn2);
?>

The results from running this against two different servers (with different user IDs and passwords) are:

resource(1) of type (imap)
object(stdClass)(6) {
  ["flags"]=>
  int(31)
  ["messages"]=>
  int(2)
  ["recent"]=>
  int(0)
  ["unseen"]=>
  int(0)
  ["uidnext"]=>
  int(3)
  ["uidvalidity"]=>
  int(1008100790)
}
resource(2) of type (imap)
object(stdClass)(6) {
  ["flags"]=>
  int(31)
  ["messages"]=>
  int(9)
  ["recent"]=>
  int(0)
  ["unseen"]=>
  int(1)
  ["uidnext"]=>
  int(56694)
  ["uidvalidity"]=>
  int(407)
}
bool(false)
object(stdClass)(8) {
  ["Unread"]=>
  int(0)
  ["Deleted"]=>
  int(0)
  ["Nmsgs"]=>
  int(2)
  ["Size"]=>
  int(4974)
  ["Date"]=>
  string(37) "Tue, 11 Dec 2001 15:20:52 -0500 (EST)"
  ["Driver"]=>
  string(4) "imap"
  ["Mailbox"]=>
  string(49) "{localhost.localdomain:143/imap/user="user"}INBOX"
  ["Recent"]=>
  int(0)

Note the bool(false) return from the second imap_status
call against host1, though I never closed the imap_connection and the imap_mailboxmsginfo call below works fine.

I can see errors in the systems logs being generated by this script. It seems that imap_status is getting the host correct but is passing the wrong userid to the imap server.

So for example in the above I see errors from imapd on
host1 using the username from host2.

(FWIW I also seen this behavior with the 4.2.0-dev tree from November 28th, 2001).

--rdp