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The IntlGregorianCalendar class

(PHP 5 >= 5.5.0, PHP 7, PHP 8)

はじめに

クラス概要

IntlGregorianCalendar extends IntlCalendar {

/* 継承した定数 */

const int IntlCalendar::FIELD_ERA = 0 ;

const int IntlCalendar::FIELD_YEAR = 1 ;

const int IntlCalendar::FIELD_MONTH = 2 ;

const int IntlCalendar::FIELD_WEEK_OF_YEAR = 3 ;

const int IntlCalendar::FIELD_WEEK_OF_MONTH = 4 ;

const int IntlCalendar::FIELD_DATE = 5 ;

const int IntlCalendar::FIELD_DAY_OF_YEAR = 6 ;

const int IntlCalendar::FIELD_DAY_OF_WEEK = 7 ;

const int IntlCalendar::FIELD_DAY_OF_WEEK_IN_MONTH = 8 ;

const int IntlCalendar::FIELD_AM_PM = 9 ;

const int IntlCalendar::FIELD_HOUR = 10 ;

const int IntlCalendar::FIELD_HOUR_OF_DAY = 11 ;

const int IntlCalendar::FIELD_MINUTE = 12 ;

const int IntlCalendar::FIELD_SECOND = 13 ;

const int IntlCalendar::FIELD_MILLISECOND = 14 ;

const int IntlCalendar::FIELD_ZONE_OFFSET = 15 ;

const int IntlCalendar::FIELD_DST_OFFSET = 16 ;

const int IntlCalendar::FIELD_YEAR_WOY = 17 ;

const int IntlCalendar::FIELD_DOW_LOCAL = 18 ;

const int IntlCalendar::FIELD_EXTENDED_YEAR = 19 ;

const int IntlCalendar::FIELD_JULIAN_DAY = 20 ;

const int IntlCalendar::FIELD_MILLISECONDS_IN_DAY = 21 ;

const int IntlCalendar::FIELD_IS_LEAP_MONTH = 22 ;

const int IntlCalendar::FIELD_FIELD_COUNT = 23 ;

const int IntlCalendar::FIELD_DAY_OF_MONTH = 5 ;

const int IntlCalendar::DOW_SUNDAY = 1 ;

const int IntlCalendar::DOW_MONDAY = 2 ;

const int IntlCalendar::DOW_TUESDAY = 3 ;

const int IntlCalendar::DOW_WEDNESDAY = 4 ;

const int IntlCalendar::DOW_THURSDAY = 5 ;

const int IntlCalendar::DOW_FRIDAY = 6 ;

const int IntlCalendar::DOW_SATURDAY = 7 ;

const int IntlCalendar::DOW_TYPE_WEEKDAY = 0 ;

const int IntlCalendar::DOW_TYPE_WEEKEND = 1 ;

const int IntlCalendar::DOW_TYPE_WEEKEND_OFFSET = 2 ;

const int IntlCalendar::DOW_TYPE_WEEKEND_CEASE = 3 ;

const int IntlCalendar::WALLTIME_FIRST = 1 ;

const int IntlCalendar::WALLTIME_LAST = 0 ;

const int IntlCalendar::WALLTIME_NEXT_VALID = 2 ;

/* メソッド */

public __construct(IntlTimeZone $tz = ?, string $locale = ?)

public getGregorianChange(): float|false

public isLeapYear(int $year): bool

public setGregorianChange(float $date): bool

/* 継承したメソッド */

public IntlCalendar::add(int $field, int $amount): bool

public IntlCalendar::after(IntlCalendar $other): bool

public IntlCalendar::before(IntlCalendar $other): bool

public IntlCalendar::clear(int $field = NULL): bool

private IntlCalendar::__construct()

public static IntlCalendar::createInstance(mixed $timeZone = NULL, string $locale = ""): IntlCalendar

public IntlCalendar::equals(IntlCalendar $other): bool

public IntlCalendar::fieldDifference(float $when, int $field): int|false

public static IntlCalendar::fromDateTime(mixed $dateTime): IntlCalendar

public IntlCalendar::get(int $field): int

public IntlCalendar::getActualMaximum(int $field): int|false

public IntlCalendar::getActualMinimum(int $field): int|false

public static IntlCalendar::getAvailableLocales(): array

public IntlCalendar::getDayOfWeekType(int $dayOfWeek): int|false

public IntlCalendar::getErrorCode(): int

public IntlCalendar::getErrorMessage(): string

public IntlCalendar::getFirstDayOfWeek(): int|false

public IntlCalendar::getGreatestMinimum(int $field): int|false

public static IntlCalendar::getKeywordValuesForLocale(string $key, string $locale, bool $commonlyUsed): Iterator|false

public IntlCalendar::getLeastMaximum(int $field): int|false

public IntlCalendar::getLocale(int $localeType): string|false

public IntlCalendar::getMaximum(int $field): int|false

public IntlCalendar::getMinimalDaysInFirstWeek(): int|false

public IntlCalendar::getMinimum(int $field): int|false

public static IntlCalendar::getNow(): float

public IntlCalendar::getRepeatedWallTimeOption(): int

public IntlCalendar::getSkippedWallTimeOption(): int

public IntlCalendar::getTime(): float

public IntlCalendar::getTimeZone(): IntlTimeZone

public IntlCalendar::getType(): string

public IntlCalendar::getWeekendTransition(string $dayOfWeek): int|false

public IntlCalendar::inDaylightTime(): bool

public IntlCalendar::isEquivalentTo(IntlCalendar $other): bool

public IntlCalendar::isLenient(): bool

public IntlCalendar::isSet(int $field): bool

public IntlCalendar::isWeekend(float $date = NULL): bool

public IntlCalendar::roll(int $field, mixed $amountOrUpOrDown): bool

public IntlCalendar::set(int $field, int $value): bool

public IntlCalendar::set(
    int $year,
    int $month,
    int $dayOfMonth = NULL,
    int $hour = NULL,
    int $minute = NULL,
    int $second = NULL
): bool

public IntlCalendar::setFirstDayOfWeek(int $dayOfWeek): bool

public IntlCalendar::setLenient(bool $isLenient): bool

public IntlCalendar::setMinimalDaysInFirstWeek(int $minimalDays): bool

public IntlCalendar::setRepeatedWallTimeOption(int $wallTimeOption): bool

public IntlCalendar::setSkippedWallTimeOption(int $wallTimeOption): bool

public IntlCalendar::setTime(float $date): bool

public IntlCalendar::setTimeZone(mixed $timeZone): bool

public IntlCalendar::toDateTime(): DateTime

}

IntlGregorianCalendar::__construct — Create the Gregorian Calendar class
IntlGregorianCalendar::getGregorianChange — Get the Gregorian Calendar change date
IntlGregorianCalendar::isLeapYear — Determine if the given year is a leap year
IntlGregorianCalendar::setGregorianChange — Set the Gregorian Calendar the change date

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User Contributed Notes 1 note

down

Julian Sawicki ¶

3 years ago


I was using `IntlGregorianCalendar` because it offered a nice way to get the week number of the year as an integer. This differs from `DateTime`; `DateTime` gives you the week number of the year as an string.

<?php 

$dateTime = new DateTime('21-09-2020 09:00:00');
echo $dateTime->format("W"); // string '39'

$intlCalendar = IntlCalendar::fromDateTime ('21-09-2020 09:00:00');
echo $intlCalendar->get(IntlCalendar::FIELD_WEEK_OF_YEAR); // integer 39

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The IntlGregorianCalendar class

はじめに

クラス概要

目次

User Contributed Notes 1 note