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echo mb_detect_encoding(file_get_contents('a.txt'));
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function isUTF8($str)
{
if ($str === mb_convert_encoding(mb_convert_encoding($str, "UTF-32", "UTF-8"), "UTF-8", "UTF-32"))
{
return true;
}
else
{
return false;
}
}
$content = file_get_contents("a.txt");
echo isUTF8($content);
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function ChickC($str)
{
$array = array('ASCII','GBK','UTF-8');
foreach ($array as $value)
{
if ($str === mb_convert_encoding(mb_convert_encoding($str, "UTF-32", $value), $value, "UTF-32"))
return $value;
}
return false;
}


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