trouble with function openssl_csr_new()

Hi ... I want to generate certificate for smardcard login (MS Win-XP) and for do that the subject of certificate should contain same key (in key:value of $dn) multiple times for example ... cert generated by ca suplied with W-2003 server for smartcard login contains: Subject: DC = local, DC = foo, CN = Users, CN = bar but $dn is an array ... so if I define array as: $dn = array ( "DC" => "local", "DC" => "foo" ); I've got array with one key:value pair "DC" => "foo" ... Is there any other way to pass the $dn to function ... (using other structure ... or formated string ... ) or mayby I can use other function whitch supports repeated keys ? -- Albert Kopka akopka@uw.olsztyn.pl