PHP将编码转为UTF-8

        $encode = mb_detect_encoding($content, array('ASCII', 'GB2312', 'GBK', 'UTF-8'));//首先检测当前编码是属于哪一种，我这里只给了4种        if($encode != 'UTF-8')//如果当前不是UTF-8就将之转为UTF-8        {            $content = mb_convert_encoding($content, 'UTF-8', $encode);        }