php mb_convert_encoding 问题
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/12072431/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
mb_convert_encoding issues
提问by brasimon
I have some issues with the PHP function mb_detect_encoding. I can't convert it to ISO-8859-1. Any help?
我对 PHP 函数 mb_detect_encoding 有一些问题。我无法将其转换为 ISO-8859-1。有什么帮助吗？
Code:
代码：
$str = "???";
$encoding = mb_detect_encoding($str);
echo $encoding;
$encoding = mb_detect_encoding(mb_convert_encoding($str, "ISO-8859-1"));
echo $encoding;
Output:
输出：
UTF-8
UTF-8
UTF-8
UTF-8
Updated, solution:
更新，解决方案：
I updated mb_detect_order to array('UTF-8', 'ISO-8859-1') and it worked.
我将 mb_detect_order 更新为 array('UTF-8', 'ISO-8859-1') 并且它起作用了。
回答by borrible
You've not actually converted your string. Rather, the call to mb_convert_encodingdid not assume that the original string was in UTF-8. The string before the call was a byte sequence that could have been ISO-8859-1 already (and would have represented items differently). You can see this is the case by, rather than calling the mb_detect_encoding, using bin2hexon the string and seeing the byte-sequence after the conversion call. You'll see the byte sequence was unchanged.
你实际上并没有转换你的字符串。相反，对 的调用mb_convert_encoding并不假设原始字符串是 UTF-8。调用之前的字符串是一个字节序列，它可能已经是 ISO-8859-1（并且会以不同的方式表示项目）。您可以mb_detect_encoding通过bin2hex在字符串上使用，而不是调用，并在转换调用后查看字节序列来看到这种情况。你会看到字节序列没有改变。
To get the conversion to work, you need to tell it (in this case) the original encoding. Use:
要使转换工作，您需要告诉它（在本例中）原始编码。用：
mb_convert_encoding($str, 'ISO-8859-1','utf-8');
If you examine the byte-sequence after this you'll see conversion has taken place.
如果您在此之后检查字节序列，您将看到转换已经发生。
回答by brasimon
I updated mb_detect_order to array('UTF-8', 'ISO-8859-1') and it worked
我将 mb_detect_order 更新为 array('UTF-8', 'ISO-8859-1') 并且它起作用了
