/**
* This function returns the year day of the date.
*
* @param $date (Optional) A YDDate object, timestamp, array or string.
* If null, the date of the object. Default: null.
* @param $format (Optional) The format name. Default: "ISO".
*
* @returns The year day.
*
* @static If $date is passed.
*/
function getYearDay($date = null, $format = "ISO")
{
if ($date === null) {
$date = $this->parse($date, $format);
} else {
$date = YDDate::parse($date, $format);
}
$yday = 0;
for ($i = 1; $i < $date['month']; $i++) {
$yday += YDDate::getDaysInMonth($i, $date['year']);
}
return $yday + $date['day'];
}
/**
* This function returns the quarter of the date.
*
* @param $date (Optional) A YDDate object, timestamp, array or string.
* If null, the date of the object. Default: null.
* @param $format (Optional) The format name. Default: 'ISO'.
*
* @returns The quarter.
*
* @static If $date is passed.
*/
function getQuarter($date = null, $format = 'ISO')
{
if ($date === null) {
$date = $this->parse($date, $format);
} else {
$date = YDDate::parse($date, $format);
}
switch ($date['month']) {
case 1:
case 2:
case 3:
return 1;
case 4:
case 5:
case 6:
return 2;
case 7:
case 8:
case 9:
return 3;
case 10:
case 11:
case 12:
return 4;
}
return 0;
}