如果不清楚字符串的编码格式的话，就可以将这段字符这样检查：$encode = mb_detect_encoding($string, array("ASCII",'UTF-8′,"GB2312′,"GBK",'BIG5′)); echo $encode;这样就能知道它是什么编码的了。后续操作还可以为其转码：if ($encode == “UTF-8″){$string = iconv("UTF-8″,"GBK",$string);}