php程序如何把中文字符转换为拼音(4)

        {

            $string .= chr(0xC0 | $char>>6);

            $string .= chr(0x80 | $char & 0x3F);

        }elseif($char < 0x10000){

            $string .= chr(0xE0 | $char>>12);

            $string .= chr(0x80 | $char>>6 & 0x3F);

            $string .= chr(0x80 | $char & 0x3F);

        } elseif($char < 0x200000) {

            $string .= chr(0xF0 | $char>>18);

            $string .= chr(0x80 | $char>>12 & 0x3F);

            $string .= chr(0x80 | $char>>6 & 0x3F);

            $string .= chr(0x80 | $char & 0x3F);

        }

        return iconv('UTF-8', 'GB2312//IGNORE', $string);

    }

    /**

     * 比较数组

     * @param $arr1 数组1

     * @param $arr2 数组2

     */

    public function arrayCombine($arr1, $arr2)

    {

        for($i=0; $i<count($arr1); $i++) $res[$arr1[$i]] = $arr2[$i];

        return $res;

    }

    /**

     *获得汉字的拼音首字母

     * @param $str 字符串

     */

    public function getInitial($str,$charset) {

        if($charset=="UTF-8")$str=$this->utf82GB2312($str);

        $asc = ord(substr($str, 0, 1));

        if ($asc < 160) {//非中文

            if ($asc >= 48 && $asc <= 57) {

                return chr($asc);  //数字

            } elseif ($asc >= 65 && $asc <= 90) {

                return chr($asc);   // A--Z