DateTimeZone::getTransitions

    timezone_transitions_get

    (PHP 5 >= 5.2.0, PHP 7, PHP 8)

    DateTimeZone::getTransitions -- timezone_transitions_get — Returns all transitions for the timezone

    说明

    面向对象风格

    public DateTimeZone::getTransitions(int $timestampBegin = PHP_INT_MIN, int $timestampEnd = PHP_INT_MAX): array|false

    过程化风格

    timezone_transitions_get(DateTimeZone $object, int $timestampBegin = PHP_INT_MIN, int $timestampEnd = PHP_INT_MAX): array|false

    参数

    object

    仅过程化风格：由 timezone_open() 返回的 DateTimeZone 对象。

    timestampBegin

    Begin timestamp.

    timestampEnd

    End timestamp.

    返回值

    Returns a numerically indexed array of transition arrays on success, 或者在失败时返回 false. DateTimeZone objects wrapping type 1 (UTC offsets) and type 2 (abbreviations) do not contain any transitions, and calling this method on them will return false.

    If timestampBegin is given, the first entry in the returned array will contain a transition element at the time of timestampBegin.

    Transition Array Structure
    Key Type Description
    ts int Unix timestamp
    time string DateTimeInterface::ISO8601_EXPANDED (PHP 8.2 and later), or DateTimeInterface::ISO8601 (PHP 8.1 and lower) time string
    offset int Offset to UTC in seconds
    isdst bool Whether daylight saving time is active
    abbr string Timezone abbreviation

    示例

    示例 #1 A timezone_transitions_get() example

    <?php
    $timezone     = new DateTimeZone("Europe/London");
    $transitions = $timezone->getTransitions();
    print_r(array_slice($transitions, 0, 3));
    ?>

    以上示例的输出类似于：

    Array
(
    [0] => Array
        (
            [ts] => -9223372036854775808
            [time] => -292277022657-01-27T08:29:52+0000
            [offset] => 3600
            [isdst] => 1
            [abbr] => BST
        )

    [1] => Array
        (
            [ts] => -1691964000
            [time] => 1916-05-21T02:00:00+0000
            [offset] => 3600
            [isdst] => 1
            [abbr] => BST
        )

    [2] => Array
        (
            [ts] => -1680472800
            [time] => 1916-10-01T02:00:00+0000
            [offset] => 0
            [isdst] => 
            [abbr] => GMT
        )

)

    示例 #2 A timezone_transitions_get() example with timestampBegin set

    <?php
    $timezone     = new DateTimeZone("Europe/London");
    $transitions = $timezone->getTransitions(time());
    print_r(array_slice($transitions, 0, 3));
    ?>

    以上示例的输出类似于：

    Array
(
    [0] => Array
        (
            [ts] => 1654184161
            [time] => 2022-06-02T15:36:01+0000
            [offset] => 3600
            [isdst] => 1
            [abbr] => BST
        )

    [1] => Array
        (
            [ts] => 1667091600
            [time] => 2022-10-30T01:00:00+0000
            [offset] => 0
            [isdst] => 
            [abbr] => GMT
        )

    [2] => Array
        (
            [ts] => 1679792400
            [time] => 2023-03-26T01:00:00+0000
            [offset] => 3600
            [isdst] => 1
            [abbr] => BST
        )

)

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