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<?php |
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namespace Vctls\IntervalGraph\Util; |
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use DateInterval; |
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use DateTime; |
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use Exception; |
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use Vctls\IntervalGraph\IntervalGraph; |
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/** |
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* Utility class for creating interval graphs. |
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* |
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* @package Vctls\IntervalGraph |
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*/ |
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class Date |
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{ |
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/** |
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* Create an interval of dates from two integers and a value. |
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* |
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* @param $start |
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* @param $end |
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* @param mixed $value |
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* @return array |
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*/ |
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public static function intv(int $start, int $end, $value = null): array |
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{ |
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$startDate = DateTime::createFromFormat('Y-m-d', '2019-01-01') |
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->add(new DateInterval("P{$start}D"))->setTime(0, 0); |
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$endDate = DateTime::createFromFormat('Y-m-d', '2019-01-01') |
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->add(new DateInterval("P{$end}D"))->setTime(23, 59, 59); |
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return [$startDate, $endDate, $value]; |
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} |
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/** |
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* Create an IntervalGraph for handling dates. |
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* |
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* @param $intervals |
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* @return IntervalGraph |
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*/ |
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public static function intvg($intervals = null): IntervalGraph |
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{ |
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$intvg = new IntervalGraph(); |
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$intvg->getFlattener() |
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->setSubstractStep(static function (DateTime $bound) { |
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return (clone $bound)->sub(new DateInterval('PT1S')); |
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}) |
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->setAddStep(static function (DateTime $bound) { |
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return (clone $bound)->add(new DateInterval('PT1S')); |
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}); |
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if (isset($intervals)) { |
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$intvg->setIntervals($intervals); |
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} |
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return $intvg; |
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} |
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/** |
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* Generate a random date. |
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* |
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* @param int $min |
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* @param int $max |
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* @return DateTime |
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*/ |
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public static function rdm($min = 1514764800, $max = 1577750400): ?DateTime |
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{ |
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try { |
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return (new DateTime)->setTimestamp(random_int($min, $max)); |
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} catch (Exception $e) { |
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return null; |
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} |
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} |
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} |
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