ajax如何传中文参数乱码解决办法

参数是中文encodeuricomponent这个方法必须调用两次
*/

function utf8rawurldecode ($source) {
  $decodedstr = "";
  $pos = 0;
  $len = strlen ($source);
  while ($pos < $len) {
  $charat = substr ($source, $pos, 1);
  if ($charat == '%') {
  $pos++;
  $charat = substr ($source, $pos, 1);
  if ($charat == 'u') {
  // we got a unicode character
  $pos++;
  $unicodehexval = substr ($source, $pos, 4);
  $unicode = hexdec ($unicodehexval);
  $entity = "&#". $unicode . ';';
  $decodedstr .= utf8_encode ($entity);
  $pos += 4;
  }
  else {
  // we have an escaped ascii character
  $hexval = substr ($source, $pos, 2);
  $decodedstr .= chr (hexdec ($hexval));
  $pos += 2;
  }
  } else {
  $decodedstr .= $charat;
  $pos++;
  }
  }
  return $decodedstr;
}