Multibyte String
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Basics of Japanese multi-byte encodings

Japanese characters can only be represented by multibyte encodings, and multiple encoding standards are used depending on platform and text purpose. To make matters worse, these encoding standards differ slightly from one another. In order to create a web application which would be usable in a Japanese environment, a developer has to keep these complexities in mind to ensure that the proper character encodings are used.


Multibyte String
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PHP手册
PHP手册 - N: Basics of Japanese multi-byte encodings

用户评论:

gullevek at gullevek dot org (25-Aug-2010 08:24)

For ISO-2022-JP encoding. If you convert data into this encoding it is highly recommended you use ISO-2022-JP-MS for the extended character set, eg the 1 in a circle ①.

For the mail header on the other hand you have to use ISO-2022-JP *without* the -MS extension.