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gettransitions.xml
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257 lines (244 loc) · 7.18 KB
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 77fca2416a984491b77e8783dbfa184239773912 Maintainer: takagi Status: ready -->
<!-- Credits: mumumu -->
<refentry xml:id="datetimezone.gettransitions" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>DateTimeZone::getTransitions</refname>
<refname>timezone_transitions_get</refname>
<refpurpose>タイムゾーンの変遷を返す</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<para>&style.oop;</para>
<methodsynopsis role="DateTimeZone">
<modifier>public</modifier> <type class="union"><type>array</type><type>false</type></type><methodname>DateTimeZone::getTransitions</methodname>
<methodparam choice="opt"><type>int</type><parameter>timestampBegin</parameter><initializer><constant>PHP_INT_MIN</constant></initializer></methodparam>
<methodparam choice="opt"><type>int</type><parameter>timestampEnd</parameter><initializer>2147483647</initializer></methodparam>
</methodsynopsis>
<para>&style.procedural;</para>
<methodsynopsis>
<type class="union"><type>array</type><type>false</type></type><methodname>timezone_transitions_get</methodname>
<methodparam><type>DateTimeZone</type><parameter>object</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>timestampBegin</parameter><initializer><constant>PHP_INT_MIN</constant></initializer></methodparam>
<methodparam choice="opt"><type>int</type><parameter>timestampEnd</parameter><initializer>2147483647</initializer></methodparam>
</methodsynopsis>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
&date.datetimezone.description;
<varlistentry>
<term><parameter>timestampBegin</parameter></term>
<listitem>
<para>
開始時のタイムスタンプ。
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>timestampEnd</parameter></term>
<listitem>
<para>
終了時のタイムスタンプ。
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
成功した場合にタイムゾーンの遷移を表す、数値インデックスの配列を返します。
&return.falseforfailure;。
DateTimeZone オブジェクト の type 1 (UTC オフセット)
と、type 2 (タイムゾーンの省略形) の場合は、
タイムゾーンの遷移情報は含まれません。
その場合にこのメソッドをコールしても &false; を返します。
</para>
<para>
<parameter>timestampBegin</parameter> を指定すると、
返される配列の最初のエントリに
<parameter>timestampBegin</parameter> の時点における遷移の情報が含まれるようになります。
</para>
<para>
<table>
<title>タイムゾーンの遷移を表す配列の構造</title>
<tgroup cols="2">
<thead>
<row>
<entry>キー</entry>
<entry>型</entry>
<entry>説明</entry>
</row>
</thead>
<tbody>
<row>
<entry><literal>ts</literal></entry>
<entry><type>int</type></entry>
<entry>Unixタイムスタンプ</entry>
</row>
<row>
<entry><literal>time</literal></entry>
<entry><type>string</type></entry>
<entry><constant>DateTimeInterface::ISO8601_EXPANDED</constant> (PHP
8.2 以降) または、<constant>DateTimeInterface::ISO8601</constant> (PHP 8.1 以前) 形式の文字列</entry>
</row>
<row>
<entry><literal>offset</literal></entry>
<entry><type>int</type></entry>
<entry>UTC からのオフセット(秒単位)</entry>
</row>
<row>
<entry><literal>isdst</literal></entry>
<entry><type>bool</type></entry>
<entry>夏時間が有効かどうか</entry>
</row>
<row>
<entry><literal>abbr</literal></entry>
<entry><type>string</type></entry>
<entry>タイムゾーンの省略形</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.1.0</entry>
<entry>
<parameter>timestampEnd</parameter> のデフォルト値が 2147483647 に変更されました。
以前は <constant>PHP_INT_MAX</constant> でした。
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>timezone_transitions_get</function> の例</title>
<programlisting role="php">
<![CDATA[
<?php
$timezone = new DateTimeZone("Europe/London");
$transitions = $timezone->getTransitions();
print_r(array_slice($transitions, 0, 3));
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
Array
(
[0] => Array
(
[ts] => -2147483648
[time] => 1901-12-13T20:45:52+00:00
[offset] => -75
[isdst] =>
[abbr] => LMT
)
[1] => Array
(
[ts] => 442304971
[time] => 1847-12-01T00:01:15+00:00
[offset] => 0
[isdst] =>
[abbr] => GMT
)
[2] => Array
(
[ts] => -1691964000
[time] => 1916-05-21T02:00:00+00:00
[offset] => 3600
[isdst] => 1
[abbr] => BST
)
)
]]>
</screen>
</example>
<example>
<title><parameter>timestampBegin</parameter> を設定して <function>timezone_transitions_get</function> を使う例</title>
<programlisting role="php">
<![CDATA[
<?php
$timezone = new DateTimeZone("Europe/London");
$transitions = $timezone->getTransitions(time());
print_r(array_slice($transitions, 0, 3));
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
Array
(
[0] => Array
(
[ts] => 1759058251
[time] => 2025-09-28T11:17:31+00:00
[offset] => 3600
[isdst] => 1
[abbr] => BST
)
[1] => Array
(
[ts] => 1761440400
[time] => 2025-10-26T01:00:00+00:00
[offset] => 0
[isdst] =>
[abbr] => GMT
)
[2] => Array
(
[ts] => 1774746000
[time] => 2026-03-29T01:00:00+00:00
[offset] => 3600
[isdst] => 1
[abbr] => BST
)
)
]]>
</screen>
</example>
</para>
</refsect1>
</refentry>
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