PHP中如何获取当前用户的语言设置？

$acceptedLanguages = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
// HTTP_ACCEPT_LANGUAGE的值示例：en-US,en;q=0.9,zh-CN;q=0.8,zh;q=0.7

// 使用explode函数分割成单个语言项
$acceptedLanguagesArray = explode(',', $acceptedLanguages);

// 使用array_map函数获取语言和对应的权重值
$languagesWithWeights = array_map(function($item) {
    $languageArr = explode(';', $item);
    $language = $languageArr[0];
    $weight = (isset($languageArr[1])) ? (float)str_replace('q=', '', $languageArr[1]) : 1.0;
    return array('language' => $language, 'weight' => $weight);
}, $acceptedLanguagesArray);

// 根据权重值降序排序
usort($languagesWithWeights, function($a, $b) {
    return $b['weight'] <=> $a['weight'];
});

// 获取最终的语言设置
$currentLanguage = $languagesWithWeights[0]['language'];

echo "当前语言设置：" . $currentLanguage;