How to tell what the file_get_contents data is encoded

How to judge what the file_get_contents data is encoded
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EUC-CN is the most commonly used representation of GB 2312. The "GB2312" on the browser encoding table is usually referred to as "EUC-CN" notation.

But you can't get the right results with mb_detect_encoding.
You take a look at the coded position in the list "Gb2312,gbk,utf-8".
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Encoding determines the content, content cannot determine the encoding,
For example, see a GBK kanji, can also be seen as two iso-8859-1 characters
So mb_detect_encoding can only guess, since it is a guess, can not fully guarantee the right (in fact, there is no absolute right)

What you get for file_get_contents, if it's a Web page, can be judged by meta,
If there is no such information, only "guess"
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Encoding determines the content, content cannot determine the encoding,
For example, see a GBK kanji, can also be seen as two iso-8859-1 characters
So mb_detect_encoding can only guess, since it is a guess, can not fully guarantee the right (in fact, there is no absolute right)

What you get for file_get_contents, if it's a Web page, can be judged by meta,
If there is no such information, only "guess"

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