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php教程判断页面输入字符编码方法

function convtoutf8($str)
{
if( mb_detect_encoding($str,"utf-8, iso-8859-1, gbk")!="utf-8" )
{

return  iconv("gbk","utf-8",$str);

}
else
{
return $str;
}

}
?>

不过有朋友说，mb_detect_encoding函数不支持gbk只支持utf-8,utf-7,ascii,euc-jp,sjis,eucjp-win,sjis-win,jis,iso-2022-jp和iso-8859-*
各位可以测试，我没测试过。

/* detect character encoding with current detect_order */
echo mb_detect_encoding($str);

/* "auto" is expanded according to mbstring.language */
echo mb_detect_encoding($str, "auto");

/* specify encoding_list character encoding by comma separated list */
echo mb_detect_encoding($str, "jis, eucjp-win, sjis-win");

/* use array to specify encoding_list  */
$ary[] = "ascii";
$ary[] = "jis";
$ary[] = "euc-jp";
echo

推荐一篇文章 http://www.111cn.net/phper/php-cy/36263.htm

本文来源：http://www.gdgbn.com/wangyetexiao/29575/