(PHP 5 >= 5.5.0, PHP 7, PHP 8, PECL >= 3.0.0a1)
IntlCalendar::setRepeatedWallTimeOption — Set behavior for handling repeating wall times at negative timezone offset transitions
Object-oriented style
public IntlCalendar::setRepeatedWallTimeOption(int $option): true
Procedural style
intlcal_set_repeated_wall_time_option(IntlCalendar $calendar, int $option): true
Sets the current strategy for dealing with wall times that are repeated whenever the clock is set back during dailight saving time end transitions. The default value is IntlCalendar::WALLTIME_LAST (take the post-DST instant). The other possible value is IntlCalendar::WALLTIME_FIRST (take the instant that occurs during DST).
This function requires ICU 4.9 or later.
calendarAn IntlCalendar instance.
option One of the constants IntlCalendar::WALLTIME_FIRST or IntlCalendar::WALLTIME_LAST.
Always returns true.
See the example on IntlCalendar::getRepeatedWallTimeOption().
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https://www.php.net/manual/en/intlcalendar.setrepeatedwalltimeoption.php