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I want to detect a operating system of filesystem's encoding as default, like Windows OS in different language version it will use different encoding (iso-8859-1, ms950, big5, gb2312..etc) So how can I detect the different operating system of encoding in PHP? Any idea? Thanks.
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In PHP, mb_detect_encoding() is used to detect the character encoding. It can detect the character encoding for a string from an ordered list of candidates. This function is supported in PHP 4.0.
In Visual Studio, you can select "File > Advanced Save Options..." The "Encoding:" combo box will tell you specifically which encoding is currently being used for the file.
You can make use of the UTF-8 validity check that is available in preg_match [PHPManual] since PHP 4.3. 5. It will return 0 (with no additional information) if an invalid string is given: $isUTF8 = preg_match('//u', $string);
detect_order configuration option, or mb_detect_order() function) will be used. Controls the behaviour when string is not valid in any of the listed encodings . If strict is set to false , the closest matching encoding will be returned; if strict is set to true , false will be returned.
Linux does not have an encoding, filenames are stored in binary strings and may contain anything. Interpreting that in a specific encoding is up to the application. Most often this will simply be UTF-8. But yea, it depends on the 'viewer' of filenames.
Accessing the filesystem on OS/X will use UTF-8 normalization form D.
Unfortunately, I can not answer what it is on windows. Internally it's stored as a variation of UTF-16 but accessing it through PHP on my machine the api is CP-1252, but yea, this does depend on the language.
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