What are some potential pitfalls when trying to display weekday names in a PHP calendar?

One potential pitfall when trying to display weekday names in a PHP calendar is not considering the correct starting day of the week. By default, PHP considers Sunday as the first day of the week, which may not align with the user's preferences. To solve this, you can set the starting day of the week using the `setFirstDayOfWeek()` function from the `IntlCalendar` class. 

$calendar = new IntlCalendar(IntlCalendar::GREGORIAN);
$calendar->setFirstDayOfWeek(IntlCalendar::MONDAY);

$weekdays = array('Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun');

for ($i = 0; $i < 7; $i++) {
    echo $weekdays[$calendar->getDayOfWeek()] . ' ';
    $calendar->add(IntlCalendar::FIELD_DAY_OF_MONTH, 1);
}

Keywords

DateTime date_default_timezone_set strftime setlocale localization

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