PHP中Unicode互转

Unicode与中文互转 亲测有效

    //中文转Unicode
    public function unicode_encode($name) {
        $name = iconv('UTF-8', 'UCS-2', $name);
        $len = strlen($name);
        $str = '';
        for ($i = 0; $i < $len - 1; $i = $i + 2){
            $c = $name[$i];
            $c2 = $name[$i + 1];
            if (ord($c) > 0)
            {
                $str .= '\u'.base_convert(ord($c), 10, 16).base_convert(ord($c2), 10, 16);
            }else{
                $str .= $c2;
            }
        }
        return $str;
    }
    //Unicode转为中文
    public function unicode_decode($name)
    {
        // 转换编码，将Unicode编码转换成可以浏览的utf-8编码
        $pattern = '/([\w]+)|(\\\u([\w]{4}))/i';
        preg_match_all($pattern, $name, $matches);
        if (!empty($matches)){
            $name = '';
            for ($j = 0; $j < count($matches[0]); $j++) {
                $str = $matches[0][$j];
                if (strpos($str, '\\u') === 0) {
                    $code = base_convert(substr($str, 2, 2), 16, 10);
                    $code2 = base_convert(substr($str, 4), 16, 10);
                    $c = chr($code).chr($code2);
                    $c = iconv('UCS-2', 'UTF-8', $c);
                    $name .= $c;
                }else{
                    $name .= $str;
                }
            }
        }
        return $name;
    }