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<?php |
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namespace SubjectivePHP\DateTime\Utilities; |
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/** |
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* Utility class for \DateTime objects. |
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*/ |
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abstract class DateTimeUtil |
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{ |
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/** |
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* Returns true if the given date time is a Saturday or Sunday. |
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* |
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* @param \DateTime $dateTime The date/time object. |
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* |
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* @return boolean |
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*/ |
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final public static function isWeekendDay(\DateTime $dateTime) |
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{ |
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//ISO-8601 numeric representation of the day of the week, 1 (for Monday) through 7 (for Sunday) |
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return $dateTime->format('N') > 5; |
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} |
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/** |
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* Returns true if the given date time is not a Saturday or Sunday. |
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* |
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* @param \DateTime $dateTime The date/time object. |
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* |
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* @return boolean |
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*/ |
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final public static function isWeekDay(\DateTime $dateTime) |
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{ |
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//ISO-8601 numeric representation of the day of the week, 1 (for Monday) through 7 (for Sunday) |
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return $dateTime->format('N') < 6; |
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} |
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/** |
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* Returns true if the given dates occur on the same year, month and day. |
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* |
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* @param \DateTime $thisDate A date to compare. |
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* @param \DateTime $thatDate A date to compare. |
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* |
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* @return boolean |
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*/ |
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final public static function isSameDay(\DateTime $thisDate, \DateTime $thatDate) |
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{ |
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$interval = $thisDate->diff($thatDate); |
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return !$interval->y && !$interval->m && !$interval->d; |
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} |
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/** |
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* Indicates whether the given instance of DateTime is within the daylight saving time range for the current time |
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* zone. |
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* |
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* @param \DateTime $dateTime The date/time object. |
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* |
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* @return boolean |
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*/ |
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final public static function isDaylightSavings(\DateTime $dateTime) |
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{ |
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return (bool)$dateTime->format('I'); |
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} |
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/** |
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* Returns true if the given date is between the provided date range. |
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* |
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* @param \DateTime $subjectDate The date/time object being checked. |
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* @param \DateTime $startDate The start date/time object. |
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* @param \DateTime $endDate The end date/time object. |
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* |
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* @return boolean |
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* @throws \DomainException Thrown when an invalid date range is provided. |
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*/ |
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final public static function isInRange(\DateTime $subjectDate, \DateTime $startDate, \DateTime $endDate) |
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{ |
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$subjectTimestamp = $subjectDate->getTimestamp(); |
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$startDateTimestamp = $startDate->getTimestamp(); |
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$endDateTimestamp = $endDate->getTimestamp(); |
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if ($startDateTimestamp > $endDateTimestamp) { |
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throw new \DomainException('Invalid date range provided.'); |
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} |
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return ($subjectTimestamp >= $startDateTimestamp && $subjectTimestamp <= $endDateTimestamp); |
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} |
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/** |
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* Returns the given DateTime instance as a "time ago" string. |
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* |
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* @param \DateTime $dateTime The DateTime object to present as an ago string. |
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* |
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* @return string |
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* |
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* @throws \DomainException Thrown if the given $dateTime is in the future. |
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*/ |
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final public static function asAgoString(\DateTime $dateTime) |
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{ |
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$numHours = round((time() - $dateTime->getTimestamp())/3600, 2); |
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if ($numHours < 0) { |
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throw new \DomainException('Cannot create "time ago" string for a date in the future.'); |
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} |
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$formulas = [ |
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'.025' => ['just now', 1], |
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'.5' => ['%d minutes ago', 60], |
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'1.5' => ['about an hour ago', 1], |
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'24' => ['about %d hours ago', 1], |
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'48' => ['yesterday', 1], |
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'168' => ['about %d days ago', 1/24], |
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'252' => ['last week', 1], |
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'672' => ['about %d weeks ago', 1/168], |
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'1080' => ['last month', 1], |
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'8760' => ['about %d months ago', 1/672], |
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'13140' => ['last year', 1], |
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]; |
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foreach ($formulas as $maxHours => list($format, $multiplier)) { |
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if ($numHours < $maxHours) { |
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return sprintf($format, round($numHours * $multiplier)); |
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} |
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} |
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return sprintf('about %s years ago', round($numHours/8064)); |
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} |
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} |
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subjective-php /
date
