i tried all functions here to convert from cp1251 to unicode, but they don't work. i think that this work :
<?php
function win3utf($s) {
for($i=0, $m=strlen($s); $i<$m; $i++) {
$c=ord($s[$i]);
if ($c<=127) {$t.=chr($c); continue; }
if ($c>=192 && $c<=207) {$t.=chr(208).chr($c-48); continue; }
if ($c>=208 && $c<=239) {$t.=chr(208).chr($c-48); continue; }
if ($c>=240 && $c<=255) {$t.=chr(209).chr($c-112); continue; }
if ($c==184) { $t.=chr(209).chr(209); continue; };
if ($c==168) { $t.=chr(208).chr(129); continue; };
}
return $t;
}
?>
