How can I handle validation of non-latin script input in PHP?

Posted by Matt on Stack Overflow See other posts from Stack Overflow or by Matt
Published on 2011-06-26T23:53:40Z Indexed on 2011/06/27 0:22 UTC
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php

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regex

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japanese

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non-latin

I am trying to adapt a php application to handle non-latin scripts (specifically: Japanese, simplified Chinese and Arabic). The app's data validation routines make frequent use of regular expressions to check input, but I am not sure how to adapt the \w character type to other languages without installing additional locales on the system (which I cannot rely on).

Previous developers to have worked on the app have simply added needed characters to the regexes as the number of languages we supported grew (you frequently see "[\wÀÁÂÃÄÅÆÇÈÉ... etc" in the code), but I can't really do this for all the alphabets I need to support now.

Does anybody out there have some advice on how to tackle this?

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