public static function getInitialChar($string, $lang = null)
{
if (is_null($lang)) {
$lang = 'universal';
}
if (!array_key_exists($lang, CoreConfigDisplay::$paginationChars)) {
throw new CoreException('Invalid language \'' . $lang . '\' for first character pagination!');
}
if (empty($string)) {
return CoreConfigDisplay::paginationDummy;
}
$firstChar = mb_strtoupper(CoreUtils::substr($string, 0, 1), CoreConfigDisplay::globalCharset);
foreach (CoreConfigDisplay::$paginationChars[$lang] as $shownChar => $initials) {
if (in_array($firstChar, $initials)) {
return $shownChar;
}
}
return CoreConfigDisplay::paginationDummy;
}
