- return explode(',', $sValue);
+ // removes all NULL, FALSE and Empty Strings but leaves 0 (zero) values
+ return array_values(array_filter(explode(',', $sValue), 'strlen'));
- if ($sFallback === NULL && isset($_SERVER["HTTP_ACCEPT_LANGUAGE"])) {
- $sFallback = $_SERVER["HTTP_ACCEPT_LANGUAGE"];
+ if ($sFallback === null && isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
+ $sFallback = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
- if (preg_match_all('/(([a-z]{1,8})(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $sLangString, $aLanguagesParse, PREG_SET_ORDER)) {
+ if (preg_match_all('/(([a-z]{1,8})([-_][a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $sLangString, $aLanguagesParse, PREG_SET_ORDER)) {
foreach ($aLanguagesParse as $iLang => $aLanguage) {
$aLanguages[$aLanguage[1]] = isset($aLanguage[5])?(float)$aLanguage[5]:1 - ($iLang/100);
if (!isset($aLanguages[$aLanguage[2]])) $aLanguages[$aLanguage[2]] = $aLanguages[$aLanguage[1]]/10;
foreach ($aLanguagesParse as $iLang => $aLanguage) {
$aLanguages[$aLanguage[1]] = isset($aLanguage[5])?(float)$aLanguage[5]:1 - ($iLang/100);
if (!isset($aLanguages[$aLanguage[2]])) $aLanguages[$aLanguage[2]] = $aLanguages[$aLanguage[1]]/10;
$aLangPrefOrder['name'] = 'name';
$aLangPrefOrder['brand'] = 'brand';
foreach ($aLanguages as $sLanguage => $fLanguagePref) {
$aLangPrefOrder['official_name:'.$sLanguage] = 'official_name:'.$sLanguage;
$aLangPrefOrder['name'] = 'name';
$aLangPrefOrder['brand'] = 'brand';
foreach ($aLanguages as $sLanguage => $fLanguagePref) {
$aLangPrefOrder['official_name:'.$sLanguage] = 'official_name:'.$sLanguage;