PHP实现自动识别原编码并对字符串进行编码转换的方法

/** * 对数据进行编码转换 * @param array/string $data 数组 * @param string $output 转换后的编码 * Created on 2016-7-13 */function array_iconv($data, $output = 'utf-8') {  $encode_arr = array('UTF-8','ASCII','GBK','GB2312','BIG5','JIS','eucjp-win','sjis-win','EUC-JP');  $encoded = mb_detect_encoding($data, $encode_arr);  if (!is_array($data)) {    return mb_convert_encoding($data, $output, $encoded);  }  else {    foreach ($data as $key=>$val) {      $key = array_iconv($key, $output);      if(is_array($val)) {        $data[$key] = array_iconv($val, $output);      } else {      $data[$key] = mb_convert_encoding($data, $output, $encoded);      }    }  return $data;  }}