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    The IntlDateFormatter class

    (PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL intl >= 1.0.0)

    简介

    Date Formatter is a concrete class that enables locale-dependent formatting/parsing of dates using pattern strings and/or canned patterns.

    This class represents the ICU date formatting functionality. It allows users to display dates in a localized format or to parse strings into PHP date values using pattern strings and/or canned patterns.

    Class synopsis

    class IntlDateFormatter {
    /* 常量 */
    public const int FULL;
    public const int LONG;
    public const int MEDIUM;
    public const int SHORT;
    public const int NONE;
    public const int RELATIVE_FULL;
    public const int RELATIVE_LONG;
    public const int RELATIVE_MEDIUM;
    public const int RELATIVE_SHORT;
    public const int GREGORIAN;
    public const int TRADITIONAL;
    /* 方法 */
    public __construct(
        ?string $locale,
        int $dateType = IntlDateFormatter::FULL,
        int $timeType = IntlDateFormatter::FULL,
        IntlTimeZone|DateTimeZone|string|null $timezone = null,
        IntlCalendar|int|null $calendar = null,
        ?string $pattern = null
    )
    public static create(
        ?string $locale,
        int $dateType = IntlDateFormatter::FULL,
        int $timeType = IntlDateFormatter::FULL,
        IntlTimeZone|DateTimeZone|string|null $timezone = null,
        IntlCalendar|int|null $calendar = null,
        ?string $pattern = null
    ): ?IntlDateFormatter
    public format(IntlCalendar|DateTimeInterface|array|string|int|float $datetime): string|false
    public static formatObject(IntlCalendar|DateTimeInterface $datetime, array|int|string|null $format = null, ?string $locale = null): string|false
    public getCalendar(): int|false
    public getDateType(): int|false
    public getErrorCode(): int
    public getErrorMessage(): string
    public getLocale(int $type = ULOC_ACTUAL_LOCALE): string|false
    public getPattern(): string|false
    public getTimeType(): int|false
    public getTimeZoneId(): string|false
    public getCalendarObject(): IntlCalendar|false|null
    public getTimeZone(): IntlTimeZone|false
    public isLenient(): bool
    public localtime(string $string, int &$offset = null): array|false
    public parse(string $string, int &$offset = null): int|float|false
    public setCalendar(IntlCalendar|int|null $calendar): bool
    public setLenient(bool $lenient): void
    public setPattern(string $pattern): bool
    public setTimeZone(IntlTimeZone|DateTimeZone|string|null $timezone): ?bool
    }

    预定义常量

    These constants are used to specify different formats in the constructor for DateType and TimeType.

    IntlDateFormatter::NONE
    Do not include this element
    IntlDateFormatter::FULL
    Completely specified style (Tuesday, April 12, 1952 AD or 3:30:42pm PST)
    IntlDateFormatter::LONG
    Long style (January 12, 1952 or 3:30:32pm)
    IntlDateFormatter::MEDIUM
    Medium style (Jan 12, 1952)
    IntlDateFormatter::SHORT
    Most abbreviated style, only essential data (12/13/52 or 3:30pm)
    IntlDateFormatter::RELATIVE_FULL
    The same as IntlDateFormatter::FULL, but yesterday, today, and tomorrow show as yesterday, today, and tomorrow, respectively. Available as of PHP 8.0.0, for dateType only.
    IntlDateFormatter::RELATIVE_LONG
    The same as IntlDateFormatter::LONG, but yesterday, today, and tomorrow show as yesterday, today, and tomorrow, respectively. Available as of PHP 8.0.0, for dateType only.
    IntlDateFormatter::RELATIVE_MEDIUM
    The same as IntlDateFormatter::MEDIUM, but yesterday, today, and tomorrow show as yesterday, today, and tomorrow, respectively. Available as of PHP 8.0.0, for dateType only.
    IntlDateFormatter::RELATIVE_SHORT
    The same as IntlDateFormatter::SHORT, but yesterday, today, and tomorrow show as yesterday, today, and tomorrow, respectively. Available as of PHP 8.0.0, for dateType only.

    The following int constants are used to specify the calendar. These calendars are all based directly on the Gregorian calendar. Non-Gregorian calendars need to be specified in locale. Examples might include locale="hi@calendar=BUDDHIST".

    IntlDateFormatter::TRADITIONAL
    Non-Gregorian Calendar
    IntlDateFormatter::GREGORIAN
    Gregorian Calendar

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