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人事系统开发
@@ -0,0 +1,568 @@
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<?php
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declare(strict_types=1);
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namespace MRBS;
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use IntlCalendar;
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use MRBS\ICalendar\RFC5545;
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use UnexpectedValueException;
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class DateTime extends \DateTime
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{
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private static $isHoliday = array();
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private static $validHolidays = array();
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public const ISO8601_DATE = 'Y-m-d';
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private const HOLIDAY_RANGE_OPERATOR = '..';
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// Before PHP 8 a child of DateTime::createFromFormat() returned an instance of the
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// parent, rather than the child. So we have to force createFromFormat() to return
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// an instance of the child. See https://bugs.php.net/bug.php?id=79975 and also
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// https://stackoverflow.com/questions/5450197/make-datetimecreatefromformat-return-child-class-instead-of-parent
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// This method will no longer be necessary when the minimum PHP version is > 7.
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#[\ReturnTypeWillChange]
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public static function createFromFormat($format, $datetime, ?\DateTimeZone $timezone = null)
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{
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assert(version_compare(MRBS_MIN_PHP_VERSION, '8.0.0', '<'), "This method is now redundant.");
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$parent = parent::createFromFormat($format, $datetime, $timezone);
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if ($parent === false)
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{
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return false;
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}
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return new static($parent->format('Y-m-d\TH:i:s.u'), $parent->getTimezone());
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}
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// Returns the first day of the week (0 = Sunday) for a given timezone and locale.
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// If $timezone is null, the default timezone will be used.
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// If $locale is null, the default locale will be used.
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// The method relies on the IntlCalendar class. If it doesn't exist, or there's an error,
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// the method assumes that the week starts on a Monday.
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public static function firstDayOfWeek(?string $timezone = null, ?string $locale = null) : int
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{
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global $icu_override;
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$default = 1; // Monday
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if (!class_exists('\\IntlCalendar'))
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{
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return $default;
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}
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$calendar = IntlCalendar::createInstance($timezone, $locale);
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if (!isset($calendar))
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{
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trigger_error("Could not create IntlCalendar for timezone '$timezone' and locale '$locale'", E_USER_WARNING);
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return $default;
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}
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// If we're overriding the ICU library then use that value
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if (isset($icu_override[$locale]['first_day_of_week']))
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{
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$first_day = $icu_override[$locale]['first_day_of_week'];
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// Check that it's a valid day
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if (!in_array($first_day, array(
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IntlCalendar::DOW_SUNDAY,
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IntlCalendar::DOW_MONDAY,
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IntlCalendar::DOW_TUESDAY,
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IntlCalendar::DOW_WEDNESDAY,
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IntlCalendar::DOW_THURSDAY,
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IntlCalendar::DOW_FRIDAY,
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IntlCalendar::DOW_SATURDAY
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)))
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{
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throw new Exception('$icu_override[' . $locale . "]['first_day_of_week'] must be in the range [1..7]");
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}
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}
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// Otherwise just get the standard value from ICU
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else
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{
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$first_day = $calendar->getFirstDayOfWeek();
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if ($first_day === false) {
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trigger_error($calendar->getErrorMessage(), E_USER_WARNING);
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return $default;
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}
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}
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return $first_day - 1; // IntlCalendar::DOW_SUNDAY = 1, so we need to subtract 1
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}
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// Tests whether this is the first day of the week in the locale.
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// If $locale is null, the default locale will be used.
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public function isFirstDayOfWeek(?string $locale = null) : bool
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{
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return ($this->getDayOfWeek() === self::firstDayOfWeek($this->getTimezone()->getName(), $locale));
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}
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// TODO: make $relative an object?
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// Sets the day to $relative, where relative is an RFC5545 relative day,
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// eg "-2SU". Returns FALSE if the relative day doesn't exist in this
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// month, otherwise TRUE.
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public function setRelativeDay(string $relative) : bool
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{
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$clone = clone $this;
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// Get the ordinal number and the day of the week
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list('ordinal' => $ord, 'day' => $dow) = RFC5545::parseByday($relative);
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// Set the starting day of the month, either to the first or last day of
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// the month, depending on whether we are counting forwards or backwards.
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$clone->setDay(($ord > 0) ? 1 : (int) $clone->format('t'));
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// Advance/go back to the first day of the week that is required
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// TODO: this could be optimised slightly by calculating the exact number of days required
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while ($clone->format('w') != RFC5545::convertDayToOrd($dow))
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{
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$modifier = ($ord > 0) ? '+1 day' : '-1 day';
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$clone->modify($modifier);
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}
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// Advance/go back the required number of weeks
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if (abs($ord) > 1)
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{
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$modifier = (($ord > 0) ? '+' : '-') . ($ord - 1) . 'weeks';
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$clone->modify($modifier);
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}
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// See if we are still in the same month. If not, then the relative day doesn't
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// exist in this month and return FALSE. If so, then set this date to be the
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// clone's and return TRUE.
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if ($clone->getMonth() !== $this->getMonth())
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{
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return false;
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}
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$this->setTimestamp($clone->getTimestamp());
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return true;
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}
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// Sets the time to the start of the first slot of the day
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public function setStartFirstSlot() : self
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{
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global $morningstarts, $morningstarts_minutes, $enable_periods;
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if ($enable_periods)
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{
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return $this->setTime(12, 0);
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}
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return $this->setTime($morningstarts, $morningstarts_minutes);
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}
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// Sets the time to the start of the last slot of the day.
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// (Note that if the booking day extends beyond midnight, then this will
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// be on the next day.)
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public function setStartLastSlot() : self
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{
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global $morningstarts, $morningstarts_minutes, $eveningends, $eveningends_minutes, $enable_periods, $periods;
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if ($enable_periods)
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{
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return $this->setTime(12, count($periods) - 1);
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}
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// Work out if $evening_ends is really on the next day
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if (hm_before(
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['hours' => $eveningends, 'minutes' => $eveningends_minutes],
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['hours' => $morningstarts, 'minutes' => $morningstarts_minutes])
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)
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{
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$this->modify('+1 day');
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}
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return $this->setTime($eveningends, $eveningends_minutes);
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}
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// Sets the time to the end of the last slot of the day.
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// (Note that if the booking day extends beyond midnight, then this will
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// be on the next day.)
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public function setEndLastSlot() : self
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{
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global $resolution;
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$this->setStartLastSlot();
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$this->modify("+$resolution seconds");
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return $this;
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}
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/**
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* Set the time, given as HH:MM.
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*
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* @param string $hhmm The time in the format HH:MM (24-hour format is used)
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*/
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public function setHourMinute(string $hhmm) : self
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{
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if (count($exploded = explode(':', $hhmm)) !== 2)
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{
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throw new \InvalidArgumentException("Invalid time '$hhmm'");
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}
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list($hour, $minute) = $exploded;
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$this->setTime(intval($hour), intval($minute));
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return $this;
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}
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// Adds $n (which can be negative) months to this date, without overflowing
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// into the next month. For example modifying 2023-01-31 by +1 month gives
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// 2023-02-28 rather than 2023-03-03.
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public function modifyMonthsNoOverflow(int $n, bool $allow_hidden_days = false) : void
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{
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if ($n == 0)
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{
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return;
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}
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$modifier = "$n months";
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$day = $this->format('j');
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$this->modify('first day of this month');
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$this->modify($modifier);
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$this->modify('+' . (min($day, $this->format('t')) - 1) . ' days');
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if (!$allow_hidden_days)
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{
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$this->findNearestUnhiddenDayInMonth();
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}
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}
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// Adds $n (which can be negative) years to this date, without overflowing
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// into the next month. For example modifying 2024-02-29 by +1 year gives
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// 2025-02-28 rather than 2025-03-01.
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public function modifyYearsNoOverflow(int $n, bool $allow_hidden_days = false) : void
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{
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$this->modifyMonthsNoOverflow(12 * $n, $allow_hidden_days);
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}
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/**
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* Get the hour in 24-hour format without leading zeros
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*/
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public function getHour() : int
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{
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return intval($this->format('G'));
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}
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/**
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* Get the minute without leading zeros
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*/
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public function getMinute() : int
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{
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return intval($this->format('i'));
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}
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/**
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* Get the day of the month without leading zeros
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*/
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public function getDay() : int
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{
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return intval($this->format('j'));
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}
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public function getDayOfWeek() : int
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{
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return intval($this->format('w'));
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}
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public function getDaysInMonth() : int
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{
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return intval($this->format('t'));
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}
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/**
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* Get the numeric representation of a month, without leading zeros
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*/
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public function getMonth() : int
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{
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return intval($this->format('n'));
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}
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/**
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* Get the full numeric representation of a year, at least 4 digits, with - for years BCE.
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*/
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public function getYear() : int
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{
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return intval($this->format('Y'));
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}
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// Returns a date in ISO 8601 format ('yyyy-mm-dd')
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public function getISODate() : string
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{
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return $this->format(self::ISO8601_DATE);
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}
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// Set the day to $day
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public function setDay(int $day) : self
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{
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$date = getdate($this->getTimestamp());
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$this->setDate($date['year'], $date['mon'], $day);
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return $this;
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}
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// Sets the day to $day, but not past the end of the month
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public function setDayNoOverflow(int $day) : self
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{
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$this->setDay(min($day, (int) $this->format('t')));
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return $this;
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}
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// Winds the date back to the first $month that is at or before
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// this date. Useful for aligning with financial or academic years.
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// If $month is 0, then no change is made.
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public function setMonthYearStart(int $month) : self
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{
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if ($month !== 0)
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{
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$this_month = $this->getMonth();
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$modification = $month - $this_month;
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if ($modification > 0)
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{
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$modification -= MONTHS_PER_YEAR;
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}
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$this->modifyMonthsNoOverflow($modification, true);
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}
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return $this;
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}
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// Checks whether the config setting of holidays for $year consists
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// of a valid set of dates.
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private static function validateHolidays(string $year) : bool
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{
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global $holidays;
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// Only need to validate a year once, so store the answer in a static property
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if (!isset(self::$validHolidays[$year]))
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{
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try
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{
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foreach ($holidays[$year] as $holiday)
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{
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$limits = explode(self::HOLIDAY_RANGE_OPERATOR, $holiday);
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foreach ($limits as $limit)
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{
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// Check that the dates are valid
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if (!validate_iso_date($limit))
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{
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throw new UnexpectedValueException("invalid holiday date '$limit'.");
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}
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// Check that the year is correct
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if ($year != split_iso_date($limit)[0])
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{
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throw new UnexpectedValueException("the holiday '$limit' does not occur in the year '$year'.");
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}
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}
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// Check that we haven't got more than two limits
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if (count($limits) > 2)
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{
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throw new UnexpectedValueException("invalid range '$holiday'; there is more than one " .
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"range operator (" . self::HOLIDAY_RANGE_OPERATOR . ").");
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}
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// Check that the end of the range isn't before the beginning
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elseif ((count($limits) == 2) && ($limits[1] < $limits[0]))
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{
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throw new UnexpectedValueException("invalid range '$holiday'; the end is before the beginning.");
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}
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}
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self::$validHolidays[$year] = true;
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}
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catch (UnexpectedValueException $e)
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{
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self::$validHolidays[$year] = false;
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trigger_error('Check the config setting of $holidays: ' . $e->getMessage(), E_USER_WARNING);
|
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}
|
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}
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|
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return self::$validHolidays[$year];
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||||
}
|
||||
|
||||
|
||||
// Move the date to the nearest unhidden day in this month.
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||||
private function findNearestUnhiddenDayInMonth() : void
|
||||
{
|
||||
// Trivial case: it's already unhidden
|
||||
if (!$this->isHiddenDay())
|
||||
{
|
||||
return;
|
||||
}
|
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|
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// Keep track of whether we've already tried looking beyond the ends
|
||||
// of the month, to avoid doing it again unnecessarily.
|
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$end_of_month_reached = false;
|
||||
$start_of_month_reached =false;
|
||||
|
||||
// Create a series of modifiers going progressively +1, -1, +2, -2 ..
|
||||
// +6, -6 days away from this day and test each one to check that the
|
||||
// modified day is both in the same month as the original date and is
|
||||
// not hidden.
|
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for ($i=1; $i<DAYS_PER_WEEK; $i++)
|
||||
{
|
||||
$unsigned_modifier = "$i days";
|
||||
foreach (['+', '-'] as $sign)
|
||||
{
|
||||
// Check whether we've already been past the end/start of the
|
||||
// month, and if so try the next modifier.
|
||||
if ((($sign == '+') && $end_of_month_reached) ||
|
||||
(($sign == '-') && $start_of_month_reached))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
// Otherwise, create a clone and test it with this modifier
|
||||
$clone = clone $this;
|
||||
$modifier = $sign . $unsigned_modifier;
|
||||
$clone->modify($modifier);
|
||||
if ($clone->getMonth() == $this->getMonth())
|
||||
{
|
||||
if (!$clone->isHiddenDay())
|
||||
{
|
||||
// Success! The clone is in the same month and not hidden,
|
||||
// so apply the same modifier to the original.
|
||||
$this->modify($modifier);
|
||||
return;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if ($sign == '+')
|
||||
{
|
||||
$end_of_month_reached = true;
|
||||
}
|
||||
else
|
||||
{
|
||||
$start_of_month_reached = true;
|
||||
}
|
||||
}
|
||||
unset($clone);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// Determines whether the date is a holiday, as defined
|
||||
// in the config variable $holidays.
|
||||
private function isHolidayConfig() : bool
|
||||
{
|
||||
global $holidays;
|
||||
|
||||
$year = $this->format('Y');
|
||||
$iso_date = $this->getISODate();
|
||||
|
||||
// Only need to check if a date is a holiday once, so store the answer in a
|
||||
// static property
|
||||
if (!isset(self::$isHoliday[$iso_date]))
|
||||
{
|
||||
self::$isHoliday[$iso_date] = false;
|
||||
if (!empty($holidays[$year]) && self::validateHolidays($year))
|
||||
{
|
||||
foreach ($holidays[$year] as $holiday)
|
||||
{
|
||||
$limits = explode('..', $holiday);
|
||||
|
||||
if (count($limits) == 1)
|
||||
{
|
||||
// It's a single date of the form '2022-01-01'
|
||||
if ($iso_date == $limits[0])
|
||||
{
|
||||
self::$isHoliday[$iso_date] = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
elseif (count($limits) == 2)
|
||||
{
|
||||
// It's a range of the form '2022-07-01..2022-07-31'
|
||||
if (($iso_date >= $limits[0]) && ($iso_date <= $limits[1]))
|
||||
{
|
||||
self::$isHoliday[$iso_date] = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
trigger_error("Invalid holiday element '$holiday'");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return self::$isHoliday[$iso_date];
|
||||
}
|
||||
|
||||
|
||||
// Determines whether a given date is supposed to be hidden in the display
|
||||
public function isHiddenDay() : bool
|
||||
{
|
||||
global $hidden_days;
|
||||
|
||||
return (isset($hidden_days) && in_array($this->format('w'), $hidden_days));
|
||||
}
|
||||
|
||||
|
||||
// Determines whether the date is a holiday.
|
||||
public function isHoliday() : bool
|
||||
{
|
||||
if ($this->isHolidayConfig())
|
||||
{
|
||||
return true;
|
||||
}
|
||||
|
||||
// This method can be extended to check other sources, eg a .ics
|
||||
// file or a database table.
|
||||
return false;
|
||||
}
|
||||
|
||||
|
||||
public function isToday() : bool
|
||||
{
|
||||
$today = new DateTime();
|
||||
return ($this->getISODate() == $today->getISODate());
|
||||
}
|
||||
|
||||
|
||||
public function isWeekend() : bool
|
||||
{
|
||||
return is_weekend(intval($this->format('w')));
|
||||
}
|
||||
|
||||
|
||||
// Set the time to $s, where $s is the nominal number of
|
||||
// seconds after midnight, ignoring DST changes.
|
||||
public function setNominalSeconds(int $s) : self
|
||||
{
|
||||
$second = $s % 60;
|
||||
$s -= $second;
|
||||
$m = $s/60;
|
||||
$minute = $m % 60;
|
||||
$m -= $minute;
|
||||
$hour = $m/60;
|
||||
|
||||
while ($hour > 24)
|
||||
{
|
||||
$this->modify('+1 day');
|
||||
$hour -= 24;
|
||||
}
|
||||
|
||||
return $this->setTime($hour, $minute, $second);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user