Date::getFormat

static function getFormat(ContextCulture $culture = null)
{
	static $defaultCulture = null;

	if($culture === null)
	{
		if($defaultCulture === null)
		{
			$context = Context::getCurrent();
			if($context)
			{
				$defaultCulture = $context->getCulture();
			}
		}
		$culture = $defaultCulture;
	}

	$format = static::getCultureFormat($culture);

	return static::convertFormatToPhp($format);
}