API15:JLanguageHelper/detectLanguage

Description

Tries to detect the language

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Syntax

detectLanguage()

Returns

string locale

Defined in

libraries/joomla/language/helper.php

Importing

jimport( 'joomla.language.helper' );

Source Body

function detectLanguage()
{
        if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE']))
        {
                $systemLangs    = JLanguage::getKnownLanguages();
                $browserLangs   = explode( ',', $_SERVER['HTTP_ACCEPT_LANGUAGE'] );

                foreach ($browserLangs as $browserLang)
                {
                        // slice out the part before ; on first step, the part before - on second, place into array
                        $browserLang = substr( $browserLang, 0, strcspn( $browserLang, ';' ) );
                        $primary_browserLang = substr( $browserLang, 0, 2 );

                        foreach($systemLangs as $systemLang => $metadata)
                        {
                                if (strtolower($browserLang) == strtolower(substr($metadata['tag'], 0, strlen($browserLang)))) {
                                        return $systemLang;
                                } elseif ($primary_browserLang == substr($metadata['tag'], 0, 2)) {
                                        $primaryDetectedLang = $systemLang;
                                }
                        }

                        if (isset($primaryDetectedLang)) {
                                return $primaryDetectedLang;
                        }
                }
        }

        return 'en-GB';
}

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