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<?php |
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/** |
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* Part of the Joomla Framework DateTime Package |
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* |
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* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved. |
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* @license GNU Lesser General Public License version 2.1 or later; see LICENSE |
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*/ |
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namespace Joomla\DateTime; |
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/** |
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* DateInterval. |
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* |
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* @since 2.0.0 |
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* |
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* @property-read integer $y Number of years. |
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* @property-read integer $m Number of months. |
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* @property-read integer $d Number of days. |
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* @property-read integer $h Number of hours. |
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* @property-read integer $i Number of minutes. |
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* @property-read integer $s Number of seconds. |
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* @property-read integer $invert Is 1 if the interval represents a negative time period and 0 otherwise. |
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*/ |
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final class DateInterval |
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{ |
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/** |
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* PHP DateInverval object |
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* |
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* @var \DateInterval |
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* @since 2.0.0 |
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*/ |
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private $interval; |
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/** |
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* Constructor. |
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* |
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* @param \DateInterval|string $interval Either a PHP DateInterval object or a string with an interval specification. |
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* |
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* @since 2.0.0 |
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*/ |
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public function __construct($interval) |
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{ |
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$this->interval = ($interval instanceof \DateInterval) ? $this->copy($interval) : new \DateInterval($interval); |
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} |
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/** |
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* Creates a DateInterval object from the relative parts of the string. |
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* |
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* @param string $time A date with relative parts. |
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* |
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* @return DateInterval |
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* |
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* @since 2.0.0 |
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*/ |
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public static function createFromDateString($time) |
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{ |
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return new DateInterval(\DateInterval::createFromDateString($time)); |
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} |
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/** |
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* Creates a DateInterval object by adding another interval into it. |
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* Uses absolute values for addition process. |
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* |
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* @param DateInterval $interval The interval to be added. |
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* |
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* @return DateInterval |
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* |
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* @since 2.0.0 |
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*/ |
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public function add(DateInterval $interval) |
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{ |
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$years = $this->y + $interval->y; |
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$months = $this->m + $interval->m; |
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$days = $this->d + $interval->d; |
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$hours = $this->h + $interval->h; |
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$minutes = $this->i + $interval->i; |
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$seconds = $this->s + $interval->s; |
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$spec = sprintf('P%sY%sM%sDT%sH%sM%sS', $years, $months, $days, $hours, $minutes, $seconds); |
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return new DateInterval($spec); |
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} |
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/** |
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* Checks if the current interval is equals to the interval given as parameter. |
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* |
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* @param DateInterval $interval The interval to compare. |
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* |
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* @return boolean |
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* |
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* @since 2.0.0 |
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*/ |
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public function equals(DateInterval $interval) |
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{ |
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$years = $this->y == $interval->y; |
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$months = $this->m == $interval->m; |
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$days = $this->d == $interval->d; |
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$hours = $this->h == $interval->h; |
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$minutes = $this->i == $interval->i; |
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$seconds = $this->s == $interval->s; |
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$invert = $this->invert == $interval->invert; |
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return $years && $months && $days && $hours && $minutes && $seconds && $invert; |
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} |
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/** |
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* Creates a DateInterval object by inverting the value of the current one. |
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* |
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* @return DateInterval |
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* |
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* @since 2.0.0 |
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*/ |
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public function invert() |
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{ |
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$interval = $this->copy($this->interval); |
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$interval->invert = $interval->invert ? 0 : 1; |
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return new DateInterval($interval); |
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} |
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/** |
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* Formats the interval. |
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* |
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* @param string $format Format accepted by PHP DateInterval::format(). |
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* |
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* @return string |
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* |
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* @since 2.0.0 |
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*/ |
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public function format($format) |
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{ |
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return $this->interval->format($format); |
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} |
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/** |
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* Magic method to access properties of the interval. |
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* |
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* @param string $name The name of the property. |
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* |
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* @return mixed |
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* |
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* @since 2.0.0 |
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*/ |
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public function __get($name) |
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{ |
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return $this->interval->$name; |
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} |
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/** |
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* Returns a PHP DateInterval object. |
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* |
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* @return \DateInterval |
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* |
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* @since 2.0.0 |
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*/ |
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public function getDateInterval() |
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{ |
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return $this->copy($this->interval); |
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} |
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/** |
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* Creates a copy of PHP DateInterval object. |
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* |
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* @param \DateInterval $interval The object to copy. |
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* |
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* @return \DateInterval |
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* |
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* @since 2.0.0 |
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*/ |
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private function copy(\DateInterval $interval) |
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{ |
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$copy = new \DateInterval($interval->format('P%yY%mM%dDT%hH%iM%sS')); |
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$copy->invert = $interval->invert; |
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return $copy; |
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} |
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} |
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