/**
* Retrieve the first weekday for a specific locale (from 0-Sunday to 6-Saturnday)
* @param string $locale = '' The locale to use. If empty we'll use the default locale set in \Punic\Data
* @return int Returns a number from 0 (Sunday) to 7 (Saturnday)
*/
public static function getFirstWeekday($locale = '')
{
static $cache = array();
$locale = empty($locale) ? \Punic\Data::getDefaultLocale() : $locale;
if (!array_key_exists($locale, $cache)) {
$result = 0;
$data = \Punic\Data::getGeneric('weekData');
$i = \Punic\Data::getTerritoryNode($data['firstDay'], $locale);
if (is_int($i)) {
$result = $i;
}
$cache[$locale] = $result;
}
return $cache[$locale];
}
