PHP Internationalization and Localization Determining the User’s Locale - Web Development and Design | Tutorial for Java, PHP, HTML, Javascript PHP Internationalization and Localization Determining the User’s Locale - Web Development and Design | Tutorial for Java, PHP, HTML, Javascript

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Wednesday, June 26, 2019

PHP Internationalization and Localization Determining the User’s Locale

PHP Internationalization and Localization



Determining the User’s Locale


Problem

You want to use the correct locale as specified by a user’s web browser.

Solution

Pass the incoming Accept-Language HTTP header value to the Locale::accept FromHttp() function to get the proper locale identifier:

    if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
        $localeToUse = Locale::acceptFromHttp($_SERVER['HTTP_ACCEPT_LANGUAGE']);
    }
    else {
        $localeToUse = Locale::getDefault();
    }

Discussion

Section 14.4 of RFC 2616, which specifies how HTTP works, provides rules for how web browsers can send an Accept-Language header with a request to indicate what languages are preferred as a response to the request. A web browser may send more than one possible language with values indicating the relative preference for those languages. The Locale::acceptFromHttp() function sorts through those values and returns an ICU locale ID corresponding to the desired language.

If no preferred language is specified, you can use the locale returned by the Locale::get Default() function, whose value comes from the intl.default_locale configuration directive (if not overridden by a call to Locale::setDefault()).


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