Convert Local Language to UNI-Code (utf-8)

function charset_decode_utf_8 ($string)
{
    if (! ereg(“[\200-\237]”, $string) and ! ereg(“[\241-\377]”, $string))
        return $string;

    // decode three byte unicode characters
    $string = preg_replace(“/([\340-\357])([\200-\277])([\200-\277])/e”,      
    “’&#’.((ord(‘\1’)-224)*4096 + (ord(‘\2’)-128)*64 + (ord(‘\3’)-128)).’;’”,  
    $string);

    // decode two byte unicode characters
    $string = preg_replace(“/([\300-\337])([\200-\277])/e”,
    “’&#’.((ord(‘\1’)-192)*64+(ord(‘\2’)-128)).’;’”,
    $string);

    return $string;
}