下面的PHP代码可以解决以下问题：
1.
json_encode UTF8码中文后的字符串不可阅读2.json_encode 多级数组中文乱码问题3.json_encode 数组中包含换行时错误问题4.json_encode 数组中键为中文的问题复制代码代码如下:function _encode($arr){$na = array();foreach ( $arr as $k => $value ) {$na[_urlencode($k)] = _urlencode ($value);}return addcslashes(urldecode(json_encode($na)),"\r\n");}function _urlencode($elem){if(is_array($elem)){foreach($elem as $k=>$v){$na[_urlencode($k)] = _urlencode($v);}return $na;}return urlencode($elem);}