'sunday', 1 => 'monday', 2 => 'tuesday', 3 => 'wednesday', 4 => 'thursday', 5 => 'friday', 6 => 'saturday', ]; public static $months_of_the_years = [ 0 => 'january', 1 => 'february', 2 => 'march', 3 => 'april', 4 => 'may', 5 => 'june', 6 => 'july', 7 => 'august', 8 => 'september', 9 => 'october', 10 => 'november', 11 => 'december', ]; /** * @var bool */ public $timestamps = false; /** * @return bool|string */ public function __toString() { $date = mktime(0, 0, 0, 12, 31, date('Y')); //@phpstan-ignore-line return date($this->format, $date); } }