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How to translate E_USER_WARNING and E_USER_ERROR messges

These error messages are meant for developers, not for end users. If you activate error handling, they will only be shown when running on the development server. On a production server it will only log them for later use by developers. For activating error handling, see how to handle E_USER_WARNING and E_USER_ERROR.

If all developers can read English, why translate the error messages? If not, the errors may not be your biggest problem: the documentation and code of phpPeanuts is only available in English.