PHP内部编码 [英] PHP internal encoding

问题描述

根据bin2hex，我的PHP在内部使用UTF-8：

  echo bin2hex（ö）; - > c3b6（utf-8）
 echo bin2hex（utf8_decode（ö））; - > f6（ISO-8859）
  

但是mb_internal_encoding（）和iconv_get_encoding（）都说是ISO-8859 -1。

  echo mb_internal_encoding（）; - > ISO-8859-1 
 var_dump（iconv_get_encoding（））; - > [ input_encoding] => string（10）ISO-8859-1[output_encoding] => string（10）ISO-8859-1[internal_encoding] => string（10）ISO-8859-1
  

UTF-8似乎是一个使用，但为什么会显示ISO-8859-1？

解决方案

这根本不奇怪。你的第一个检查是什么之间的报价。我假设您使用UTF-8保存该文件，这意味着您的字符串中有两个字节。这并不意味着内部编码是UTF-8，只是你有这两个字节你的字符串。

According to bin2hex my PHP is internally using UTF-8:

echo bin2hex("ö"); -> c3b6 (utf-8)
echo bin2hex(utf8_decode("ö")); -> f6 (ISO-8859)

But both mb_internal_encoding() and iconv_get_encoding() say it is ISO-8859-1.

echo mb_internal_encoding(); -> ISO-8859-1
var_dump(iconv_get_encoding()); ->  ["input_encoding"]=>  string(10) "ISO-8859-1"  ["output_encoding"]=>  string(10) "ISO-8859-1"  ["internal_encoding"]=>  string(10) "ISO-8859-1"

UTF-8 seems to apparently be the one it's using, but why is it showing ISO-8859-1 anyway?

解决方案

This is not strange at all. Your first check is for what is between the quotes. I assume you have saved the file using UTF-8 which means you have two bytes in your string. This does not imply that the internal encoding is UTF-8, just that you have those two bytes in you string.

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