IntlCalendar::setFirstDayOfWeek
PHP function
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(PHP 5 >= 5.5.0, PHP 7, PHP 8, PECL >= 3.0.0a1)
Set the day on which the week is deemed to start
Description
Oop
IntlCalendar::setFirstDayOfWeek(int $dayOfWeek): true
Procedural
intlcal_set_first_day_of_week(IntlCalendar $calendar, int $dayOfWeek): true
Defines the day of week deemed to start the week. This affects the behavior of fields that depend on the concept of week start and end such as IntlCalendar::FIELD_WEEK_OF_YEAR and IntlCalendar::FIELD_YEAR_WOY.
Parameters
calendarIntl-calendar
dayOfWeekOne of the constants
IntlCalendar::DOW_SUNDAY,IntlCalendar::DOW_MONDAY, …,IntlCalendar::DOW_SATURDAY.
Return Values
Always
Changelog
| Version | Description |
|---|
Examples
IntlCalendar::setFirstDayOfWeek()
php
<?php
ini_set('date.timezone', 'Europe/Lisbon');
ini_set('intl.default_locale', 'es_ES');
$cal = IntlCalendar::createInstance();
$cal->set(2013, 5 /* June */, 30); // A Sunday
var_dump($cal->getFirstDayOfWeek()); // 2 (Monday)
echo IntlDateFormatter::formatObject($cal, <<<EOD
'local day of week: 'cc'
week of month : 'W'
week of year : 'ww
EOD
), "\n";
$cal->setFirstDayOfWeek(IntlCalendar::DOW_SUNDAY);
echo IntlDateFormatter::formatObject($cal, <<<EOD
'local day of week: 'cc'
week of month : 'W'
week of year : 'ww
EOD
), "\n";The above example will output:
output
int(2)
local day of week: 7
week of month : 4
week of year : 26
local day of week: 1
week of month : 5
week of year : 27