當在php中使用mb_detect_encoding函數進行編碼識別時，很多人都碰到過識別編碼有誤的問題，例如對與GB2312和UTF- 8，或者UTF-8和GBK(這里主要是對于cp936的判斷),網上說是由于字符短是，mb_detect_encoding會出現誤判。
例如:

復制代碼 代碼如下:

$encode = mb_detect_encoding($keytitle, array("ASCII",'UTF-8′,"GB2312′,"GBK",'BIG5′));
if ($encode == “UTF-8″){
$keytitle = iconv("UTF-8″,"GBK",$keytitle);
}

復制代碼 代碼如下:

$encode = mb_detect_encoding($keytitle, array('ASCII','GB2312′,'GBK','UTF-8');