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    IntlCalendar::inDaylightTime

    (PHP 5 >= 5.5.0, PHP 7, PHP 8, PECL >= 3.0.0a1)

    IntlCalendar::inDaylightTime — Whether the objectʼs time is in Daylight Savings Time

    Descrizione

    Stile orientato agli oggetti

    public IntlCalendar::inDaylightTime(): bool

    Stile procedurale

    intlcal_in_daylight_time(IntlCalendar $calendar): bool

    Whether, for the instant represented by this object and for this objectʼs timezone, daylight saving time is in place.

    Elenco dei parametri

    calendar

    An IntlCalendar instance.

    Valori restituiti

    Returns true if the date is in Daylight Savings Time, false otherwise.

    On failure false is also returned. To detect error conditions use intl_get_error_code(), or set up Intl to throw exceptions.

    Esempi

    Example #1 IntlCalendar::inDaylightTime()

    <?php
    ini_set    ('date.timezone', 'Europe/Lisbon');
    ini_set('intl.default_locale', 'pt_PT');

    $cal = new IntlGregorianCalendar(2013, 6 /* July */, 1, 4, 56, 31);
    var_dump($cal->inDaylightTime()); // true
    $cal->set(IntlCalendar::FIELD_MONTH, 11 /* December */);
    var_dump($cal->inDaylightTime()); // false

    //DST end transition on 2013-10-27 at 0200 (wall time back 1 hour)
    $cal = new IntlGregorianCalendar(2013, 9 /* October */, 27, 1, 30, 0);

    var_dump($cal->inDaylightTime()); // false (default WALLTIME_LAST)

    $cal->setRepeatedWallTimeOption(IntlCalendar::WALLTIME_FIRST);
    $cal->set(IntlCalendar::FIELD_HOUR_OF_DAY, 1); // force time recalculation
    var_dump($cal->inDaylightTime()); // true

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