PHP Judgment page Input character encoding method _php Tutorial

PHP Tutorial Judge page Input character encoding method

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;
}

}
?>

However, a friend said that the mb_detect_encoding function does not support GBK only support UTF-8,UTF-7,ASCII,EUC-JP,SJIS,EUCJP-WIN,SJIS-WIN,JIS,ISO-2022-JP and iso-8859- *
You can test it, I haven't tested it.

/* 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

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