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<?php
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class DateValue {
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protected $date;
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protected $defaultFormat = 'r';
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public function __construct($date = NULL, DateTimeZone $zone = NULL) {
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if ($date instanceof DateTime) {
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$this->date = $date;
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}
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else {
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if (!isset($zone)) {
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$zone = new DateTimeZone(date_default_timezone_get());
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}
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$this->date = new DateTime($date, $zone);
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}
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}
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public function setDefaultFormat($format) {
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$this->defaultFormat = $format;
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}
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public function format($format = NULL) {
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if (empty($format)) {
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$format = $this->defaultFormat;
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}
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return $this->date->format($format);
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}
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public function __toString() {
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return $this->format();
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}
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public function calc($modification) {
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$new_date = clone($this->date);
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$new_date->modify($modification);
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return new self($new_date);
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}
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public function getOffset() {
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return $this->date->getOffset();
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}
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public function getTimezone() {
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return $this->date->getTimezone();
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}
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public function setTimezone(DateTimeZone $zone) {
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$new_date = clone($this->date);
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$new_date->setTimezone($zone);
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return new self($new_date);
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}
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public function setISODate($year, $week, $day = NULL) {
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$new_date = clone($this->date);
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$new_date->setISODate($year, $week, $day);
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return new self($new_date);
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}
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public function setEpoc($timestamp) {
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$new_date = new DateTime('@'. $timestamp);
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return new self($new_date);
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}
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public function setDate($year = NULL, $month = NULL, $day = NULL) {
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$new_date = clone($this->date);
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if (!isset($year)) {
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$year = $new_date->format('Y');
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}
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if (!isset($month)) {
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$month = $new_date->format('n');
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}
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if (!isset($day)) {
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$day = $new_date->format('d');
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}
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$new_date->setDate($year, $month, $day);
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return new self($new_date);
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}
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public function setYear($year) {
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$new_date = clone($this->date);
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$new_date->setDate($year, $new_date->format('n'), $new_date->format('d'));
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return new self($new_date);
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}
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public function setMonth($month) {
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$new_date = clone($this->date);
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$new_date->setDate($new_date->format('Y'), $month, $new_date->format('d'));
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return new self($new_date);
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}
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public function setDay($day) {
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$new_date = clone($this->date);
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$new_date->setDate($new_date->format('Y'), $new_date->format('n'), $day);
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return new self($new_date);
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}
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public function setTime($hour = NULL, $minute = NULL, $second = NULL) {
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$new_date = clone($this->date);
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if (!isset($hour)) {
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$hour = $new_date->format('G');
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}
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if (!isset($minute)) {
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$minute = $new_date->format('i');
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}
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if (!isset($second)) {
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$second = $new_date->format('s');
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}
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$new_date->setTime($hour, $minute, $second);
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return new self($new_date);
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}
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public function setHour($hour) {
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$new_date = clone($this->date);
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$new_date->setTime($hour, $new_date->format('i'), $new_date->format('s'));
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return new self($new_date);
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}
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public function setMinute($minute) {
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$new_date = clone($this->date);
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$new_date->setTime($new_date->format('G'), $minute, $new_date->format('s'));
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return new self($new_date);
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}
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public function setSecond($second) {
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$new_date = clone($this->date);
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$new_date->setTime($new_date->format('G'), $new_date->format('i'), $second);
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return new self($new_date);
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}
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public function compare(self $other) {
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return self::compareDates($this, $other);
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}
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public static function compareDates(self $date1, self $date2) {
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return strcmp(
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$date1->setTimezone(new DateTimeZone('UTC'))->format(DateTime::ISO8601),
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$date2->setTimezone(new DateTimeZone('UTC'))->format(DateTime::ISO8601)
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);
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}
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}
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$date = new DateValue();
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print $date . PHP_EOL;
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print $date->calc('+1 week') . PHP_EOL;
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print $date . PHP_EOL;
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$date2 = $date->calc('+1 week');
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print $date->compare($date2) . PHP_EOL;
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print DateValue::compareDates($date, $date2) . PHP_EOL;
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print $date->setYear(2006)->setMonth(12)->setDay(31)->setHour(14)->setMinute(4)->setSecond(20) . PHP_EOL;
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//print $date->setDate()
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