IntlCalendar::isSet()

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

Whether a field is set

说明

面向对象风格
publicIntlCalendar::isSet(int $field): bool

过程化风格
intlcal_is_set(IntlCalendar$cal,int $field): bool

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.

参数

$cal

The IntlCalendar resource.

$field

One of the IntlCalendar date/time field constants. These are integer values between0and IntlCalendar::FIELD_COUNT.

返回值

Assuming there are no argument errors, returns TRUE iif the field is set.

范例

See the example on IntlCalendar::clear().

参见

• IntlCalendar::clear() Clear a field or all fields
• IntlCalendar::set() Set a time field or several common fields at once