<?php



function win2utf($str)

{

 static $table = array(

"\xA8" => "\xD0\x81",

"\xB8" => "\xD1\x91",

"\xA1" => "\xD0\x8E",

"\xA2" => "\xD1\x9E",

"\xAA" => "\xD0\x84",

"\xAF" => "\xD0\x87",

"\xB2" => "\xD0\x86",

"\xB3" => "\xD1\x96",

"\xBA" => "\xD1\x94",

"\xBF" => "\xD1\x97",

"\x8C" => "\xD3\x90",

"\x8D" => "\xD3\x96",

"\x8E" => "\xD2\xAA",

"\x8F" => "\xD3\xB2",

"\x9C" => "\xD3\x91",

"\x9D" => "\xD3\x97",

"\x9E" => "\xD2\xAB",

"\x9F" => "\xD3\xB3",

 );

 return preg_replace('#[\x80-\xFF]#se',

' "$0" >= "\xF0" ? "\xD1".chr(ord("$0")-0x70) :

 ("$0" >= "\xC0" ? "\xD0".chr(ord("$0")-0x30) :

 (isset($table["$0"]) ? $table["$0"] : "")

 )',

$str

);

}



//пример

echo win2utf('тест в windows-1251');

?>