(PHP 5 >= 5.5.0, PHP 7, PHP 8, PECL >= 3.0.0a1)
IntlCalendar::isSet — Whether a field is set
Style orienté objet
$field): boolStyle procédural
Returns whether a field is set (as opposed to clear). Set fields take priority over unset fields and their default values when the date/time is being calculated. Fields set later take priority over fields set earlier.
calendarUne instance IntlCalendar.
field
 Une constantes de champ
 date/heure IntlCalendar. Ceux sont des valeurs entières
 comprises entre 0 et
 IntlCalendar::FIELD_COUNT.
   Assuming there are no argument errors, returns true if the field is set.
  
See the example on IntlCalendar::clear().