<?php
/*
 * @copyright   Leyun internet Technology(Shanghai)Co.,Ltd
 * @license     http://www.dzzoffice.com/licenses/license.txt
 * @package     DzzOffice
 * @link        http://www.dzzoffice.com
 * @author      qchlian(3580164@qq.com)
 */

class Chareset{
    // 自动转换字符集 支持数组转换
    public function autocharset($string, $from='gbk', $to='utf-8') {
        $from = strtoupper($from) == 'UTF8' ? 'utf-8' : $from;
        $to = strtoupper($to) == 'UTF8' ? 'utf-8' : $to;
        if (strtoupper($from) === strtoupper($to) || empty($string) || (is_scalar($string) && !is_string($string))) {
            //如果编码相同或者非字符串标量则不转换
            return $string;
        }
        if (is_string($string)) {
            if (function_exists('mb_convert_encoding')) {
                return mb_convert_encoding($string, $to, $from);
            } elseif (function_exists('iconv')) {
                return iconv($from, $to, $string);
            } else {
                return $string;
            }
        } elseif (is_array($string)) {
            foreach ($string as $key => $val) {
                $_key = self::autocharset($key, $from, $to);
                $string[$_key] = self::autocharset($val, $from, $to);
                if ($key != $_key)
                    unset($string[$key]);
            }
            return $string;
        }
        else {
            return $string;
        }
    }
}
?>