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    IntlGregorianCalendar クラス

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

    はじめに

    クラス概要

    class IntlGregorianCalendar extends IntlCalendar {
    /* 継承した定数 */
    public const int IntlCalendar::FIELD_ERA;
    public const int IntlCalendar::FIELD_YEAR;
    public const int IntlCalendar::FIELD_MONTH;
    public const int IntlCalendar::FIELD_WEEK_OF_YEAR;
    public const int IntlCalendar::FIELD_WEEK_OF_MONTH;
    public const int IntlCalendar::FIELD_DATE;
    public const int IntlCalendar::FIELD_DAY_OF_YEAR;
    public const int IntlCalendar::FIELD_DAY_OF_WEEK;
    public const int IntlCalendar::FIELD_DAY_OF_WEEK_IN_MONTH;
    public const int IntlCalendar::FIELD_AM_PM;
    public const int IntlCalendar::FIELD_HOUR;
    public const int IntlCalendar::FIELD_HOUR_OF_DAY;
    public const int IntlCalendar::FIELD_MINUTE;
    public const int IntlCalendar::FIELD_SECOND;
    public const int IntlCalendar::FIELD_MILLISECOND;
    public const int IntlCalendar::FIELD_ZONE_OFFSET;
    public const int IntlCalendar::FIELD_DST_OFFSET;
    public const int IntlCalendar::FIELD_YEAR_WOY;
    public const int IntlCalendar::FIELD_DOW_LOCAL;
    public const int IntlCalendar::FIELD_EXTENDED_YEAR;
    public const int IntlCalendar::FIELD_JULIAN_DAY;
    public const int IntlCalendar::FIELD_MILLISECONDS_IN_DAY;
    public const int IntlCalendar::FIELD_IS_LEAP_MONTH;
    public const int IntlCalendar::FIELD_FIELD_COUNT;
    public const int IntlCalendar::FIELD_DAY_OF_MONTH;
    public const int IntlCalendar::DOW_SUNDAY;
    public const int IntlCalendar::DOW_MONDAY;
    public const int IntlCalendar::DOW_TUESDAY;
    public const int IntlCalendar::DOW_WEDNESDAY;
    public const int IntlCalendar::DOW_THURSDAY;
    public const int IntlCalendar::DOW_FRIDAY;
    public const int IntlCalendar::DOW_SATURDAY;
    public const int IntlCalendar::DOW_TYPE_WEEKDAY;
    public const int IntlCalendar::DOW_TYPE_WEEKEND;
    public const int IntlCalendar::DOW_TYPE_WEEKEND_OFFSET;
    public const int IntlCalendar::DOW_TYPE_WEEKEND_CEASE;
    public const int IntlCalendar::WALLTIME_FIRST;
    public const int IntlCalendar::WALLTIME_LAST;
    public const int IntlCalendar::WALLTIME_NEXT_VALID;
    /* メソッド */
    public __construct(IntlTimeZone $tz = ?, string $locale = ?)
    public __construct(int $timeZoneOrYear, int $localeOrMonth, int $dayOfMonth)
    public __construct(
        int $timeZoneOrYear,
        int $localeOrMonth,
        int $dayOfMonth,
        int $hour,
        int $minute,
        int $second = ?
    )
    public static createFromDate(int $year, int $month, int $dayOfMonth): static
    public static createFromDateTime(
        int $year,
        int $month,
        int $dayOfMonth,
        int $hour,
        int $minute,
        ?int $second = null
    ): static
    public getGregorianChange(): float
    public isLeapYear(int $year): bool
    public setGregorianChange(float $timestamp): bool
    /* 継承したメソッド */
    public IntlCalendar::add(int $field, int $value): bool
    public IntlCalendar::after(IntlCalendar $other): bool
    public IntlCalendar::before(IntlCalendar $other): bool
    public IntlCalendar::clear(?int $field = null): true
    public static IntlCalendar::createInstance(IntlTimeZone|DateTimeZone|string|null $timezone = null, ?string $locale = null): ?IntlCalendar
    public IntlCalendar::equals(IntlCalendar $other): bool
    public IntlCalendar::fieldDifference(float $timestamp, int $field): int|false
    public static IntlCalendar::fromDateTime(DateTime|string $datetime, ?string $locale = null): ?IntlCalendar
    public IntlCalendar::get(int $field): int|false
    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|false
    public IntlCalendar::getErrorMessage(): string|false
    public IntlCalendar::getFirstDayOfWeek(): int|false
    public IntlCalendar::getGreatestMinimum(int $field): int|false
    public static IntlCalendar::getKeywordValuesForLocale(string $keyword, string $locale, bool $onlyCommon): IntlIterator|false
    public IntlCalendar::getLeastMaximum(int $field): int|false
    public IntlCalendar::getLocale(int $type): 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|false
    public IntlCalendar::getTimeZone(): IntlTimeZone|false
    public IntlCalendar::getType(): string
    public IntlCalendar::getWeekendTransition(int $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 $timestamp = null): bool
    public IntlCalendar::roll(int $field, int|bool $value): bool
    public IntlCalendar::set(int $field, int $value): true
    public IntlCalendar::set(
        int $year,
        int $month,
        int $dayOfMonth = NULL,
        int $hour = NULL,
        int $minute = NULL,
        int $second = NULL
    ): true
    public IntlCalendar::setDate(int $year, int $month, int $dayOfMonth): void
    public IntlCalendar::setDateTime(
        int $year,
        int $month,
        int $dayOfMonth,
        int $hour,
        int $minute,
        ?int $second = null
    ): void
    public IntlCalendar::setFirstDayOfWeek(int $dayOfWeek): true
    public IntlCalendar::setLenient(bool $lenient): true
    public IntlCalendar::setMinimalDaysInFirstWeek(int $days): true
    public IntlCalendar::setRepeatedWallTimeOption(int $option): true
    public IntlCalendar::setSkippedWallTimeOption(int $option): true
    public IntlCalendar::setTime(float $timestamp): bool
    public IntlCalendar::setTimeZone(IntlTimeZone|DateTimeZone|string|null $timezone): bool
    public IntlCalendar::toDateTime(): DateTime|false
    }

    目次

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    User Contributed Notes 1 note

    up
    0
    Julian Sawicki
    4 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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