IntlCalendar::clear

(PHP 5 >= 5.5.0, PHP 7, PHP 8, PECL >= 3.0.0a1)

IntlCalendar::clearClear a field or all fields

Descrição

Estilo orientado a objetos

public IntlCalendar::clear(?int $field = null): true

Estilo procedural

intlcal_clear(IntlCalendar $calendar, ?int $field = null): true

Clears either all of the fields or a specific field. A cleared field is marked as unset, giving it the lowest priority against overlapping fields or even default values when calculating the time. Additionally, its value is set to 0, though given the fieldʼs low priority, its value may have been internally set to another value by the time the field has finished been queried.

Parâmetros

calendar

Uma instância de IntlCalendar.

field

One of the IntlCalendar date/time field constants. These are integer values between 0 and IntlCalendar::FIELD_COUNT.

Valor Retornado

Sempre retorna true.

Changelog

Versão Descrição
8.2.0 O tipo do retorno agora é true; anteriormente, era bool.

Exemplos

Exemplo #1 IntlCalendar::clear() examples

<?php
ini_set
('intl.default_locale', 'es_ES');
ini_set('date.timezone', 'UTC');

$fields = array(
'FIELD_ERA' => 0,
'FIELD_YEAR' => 1,
'FIELD_MONTH' => 2,
'FIELD_WEEK_OF_YEAR' => 3,
'FIELD_WEEK_OF_MONTH' => 4,
'FIELD_DATE' => 5,
'FIELD_DAY_OF_YEAR' => 6,
'FIELD_DAY_OF_WEEK' => 7,
'FIELD_DAY_OF_WEEK_IN_MONTH' => 8,
'FIELD_AM_PM' => 9,
'FIELD_HOUR' => 10,
'FIELD_HOUR_OF_DAY' => 11,
'FIELD_MINUTE' => 12,
'FIELD_SECOND' => 13,
'FIELD_MILLISECOND' => 14,
'FIELD_ZONE_OFFSET' => 15,
'FIELD_DST_OFFSET' => 16,
'FIELD_YEAR_WOY' => 17,
'FIELD_DOW_LOCAL' => 18,
'FIELD_EXTENDED_YEAR' => 19,
'FIELD_JULIAN_DAY' => 20,
'FIELD_MILLISECONDS_IN_DAY' => 21,
'FIELD_IS_LEAP_MONTH' => 22,
'FIELD_FIELD_COUNT' => 23,
);
function
getSetFields(IntlCalendar $cal) {
global
$fields;
$ret = array();
foreach (
$fields as $name => $value) {
if (
$cal->isSet($value)) {
$ret[] = $name;
}
}
return
$ret;
}

$cal = new IntlGregorianCalendar(2013, 2 /* March */, 15);
echo
"After GregorianCalendar creation\n";
print_r(getSetFields($cal));
echo
"\n";

echo
IntlDateFormatter::formatObject($cal), "\n";
echo
"After the formatter requested the extended year\n";
print_r(getSetFields($cal));
echo
"\n";

$cal->clear(IntlCalendar::FIELD_YEAR);
echo
"After the year has been cleared, the date stays the same\n";
echo
IntlDateFormatter::formatObject($cal), "\n";
echo
"because FIELD_EXTENDED_YEAR is still set\n";
print_r(getSetFields($cal));
echo
"\n";

var_dump($cal->clear(IntlCalendar::FIELD_EXTENDED_YEAR));
echo
"After the extended year has been cleared\n";
print_r(getSetFields($cal));
echo
IntlDateFormatter::formatObject($cal), "\n";
echo
"\n";

echo
"After the fields are recalculated,\n"
. " extended year is set again (to 1970)\n";
print_r(getSetFields($cal));
echo
"\n";

$cal->clear();
echo
"After calling variant with no arguments\n";
print_r(getSetFields($cal));
echo
IntlDateFormatter::formatObject($cal), "\n";

O exemplo acima produzirá:

After GregorianCalendar creation
Array
(
    [0] => FIELD_ERA
    [1] => FIELD_YEAR
    [2] => FIELD_MONTH
    [3] => FIELD_DATE
)

15/03/2013 00:00:00
After the formatter requested the extended year
Array
(
    [0] => FIELD_ERA
    [1] => FIELD_YEAR
    [2] => FIELD_MONTH
    [3] => FIELD_DATE
    [4] => FIELD_EXTENDED_YEAR
)

After the year has been cleared, the date stays the same
15/03/2013 00:00:00
because FIELD_EXTENDED_YEAR is still set
Array
(
    [0] => FIELD_ERA
    [1] => FIELD_MONTH
    [2] => FIELD_DATE
    [3] => FIELD_EXTENDED_YEAR
)

bool(true)
After the extended year has been cleared
Array
(
    [0] => FIELD_ERA
    [1] => FIELD_MONTH
    [2] => FIELD_DATE
)
15/03/1970 00:00:00

After the fields are recalculated,
 extended year is set again (to 1970)
Array
(
    [0] => FIELD_ERA
    [1] => FIELD_MONTH
    [2] => FIELD_DATE
    [3] => FIELD_EXTENDED_YEAR
)

After calling variant with no arguments
Array
(
)
01/01/1970 00:00:00

add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top