imap_listmailbox

$mbox = imap_open("{your.imap.host}","username","password",OP_HALFOPEN)
or die("can't connect: ".imap_last_error());
 
$list = imap_listmailbox($mbox,"{your.imap.host}","*");
if(is_array($list)) {
reset($list);
while (list($key, $val) = each($list))
print imap_utf7_decode($val)."<br>\n";
} else
print "imap_listmailbox failed: ".imap_last_error()."\n";
 
imap_close($mbox);