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https://github.com/php/doc-zh.git
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472 lines
11 KiB
XML
472 lines
11 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: 3a8c3e77df070a046c9d5b56b68926ca2d7e5ee3 Maintainer: mowangjuanzi Status: ready -->
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<refentry xml:id="function.date-parse" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>date_parse</refname>
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<refpurpose>返回指定日期/时间的详细信息的关联数组</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>array</type><methodname>date_parse</methodname>
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<methodparam><type>string</type><parameter>datetime</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>date_parse</function> 根据与 <function>strtotime</function>
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和 <function>DateTimeImmutable::__construct</function> 相同的规则解析指定
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<parameter>datetime</parameter> 字符串。它不返回 Unix 时间戳(使用
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<function>strtotime</function>)或者 <classname>DateTimeImmutable</classname>
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对象(使用 <function>DateTimeImmutable::__construct</function>),而是返回包含在指定
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<parameter>datetime</parameter> 字符串中检测到相关信息的关联数组。
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</para>
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<para>
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如果找不到某组元素的信息,那么这些数组元素将会设置为 &false; 或缺失。如果需要从相同的
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<parameter>datetime</parameter> 字符串构建时间戳或者 <classname>DateTimeImmutable</classname>
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对象,需要将更多字段设置为非 &false; 值。查看以下示例以了解情况。
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>datetime</parameter></term>
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<listitem>
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<para>
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<function>DateTimeImmutable::__construct</function> 接受的日期/时间格式。
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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返回 <type>array</type>,包含解析日期/时间的信息。
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</para>
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<para>
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返回的数组存在以下键
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<literal>year</literal>、<literal>month</literal>、<literal>day</literal>、<literal>hour</literal>、<literal>minute</literal>、<literal>second</literal>、<literal>fraction</literal>
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和 <literal>is_localtime</literal>。
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</para>
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<para>
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如果存在 <literal>is_localtime</literal>,则 <literal>zone_type</literal> 表示时区类型。类型
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<literal>1</literal>(UTC 时差),添加 <literal>zone</literal>、<literal>is_dst</literal>;类型
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<literal>2</literal>(时区缩写),添加 <literal>tz_abbr</literal>、<literal>is_dst</literal>;类型
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<literal>3</literal>(时区标识符),添加 <literal>tz_abbr</literal>、<literal>tz_id</literal>。
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</para>
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<para>
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如果 <parameter>datetime</parameter> 字符串存在类似 <literal>+3 days</literal>
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这样的相对时间元素,则返回的数组则包含键为 <literal>relative</literal> 的嵌套数组。然后此数组将包含如下键
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<literal>year</literal>、<literal>month</literal>、<literal>day</literal>、<literal>hour</literal>、<literal>minute</literal>、<literal>second</literal>,如果必要还会包含
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<literal>weekday</literal> 和 <literal>weekdays</literal>,具体取决于传入的字符串。
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</para>
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<para>
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数组包含 <literal>warning_count</literal> 和 <literal>warnings</literal>
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字段。第一个表示发现了多少警告。元素 <literal>warnings</literal> 的键表示指定
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<parameter>datetime</parameter> 发生警告的位置,值为字符串,描述警告本身。
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</para>
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<para>
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数组也包含 <literal>error_count</literal> 和 <literal>errors</literal>
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字段。第一个表示发现了多少错误。元素 <literal>errors</literal> 的键表示指定
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<parameter>datetime</parameter> 发生错误的位置,值为字符串,描述错误本身。
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</para>
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<warning>
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<para>
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如果同一个位置存在多个警告/错误,那么 <literal>warnings</literal> 和 <literal>errors</literal>
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数组中元素的数量可能会少于 <literal>warning_count</literal> 或者 <literal>error_count</literal>。
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</para>
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</warning>
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</refsect1>
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<refsect1 role="errors">
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&reftitle.errors;
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<para>
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date/time 的格式有错误时,返回数组的 'errors' 键将包含错误信息。
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</para>
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</refsect1>
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<refsect1 role="changelog">
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&reftitle.changelog;
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>7.2.0</entry>
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<entry>
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返回数组的 <literal>zone</literal>
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键现在代表秒,而不是分钟。并且正负符号已反转,例如:之前是
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<literal>-120</literal> 现在是 <literal>7200</literal>。
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</entry>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title>具有全面的 <parameter>datetime</parameter> 字符串的 <function>date_parse</function> 示例</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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var_dump(date_parse("2006-12-12 10:00:00.5"));
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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array(12) {
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["year"]=>
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int(2006)
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["month"]=>
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int(12)
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["day"]=>
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int(12)
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["hour"]=>
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int(10)
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["minute"]=>
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int(0)
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["second"]=>
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int(0)
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["fraction"]=>
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float(0.5)
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["warning_count"]=>
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int(0)
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["warnings"]=>
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array(0) {
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}
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["error_count"]=>
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int(0)
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["errors"]=>
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array(0) {
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}
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["is_localtime"]=>
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bool(false)
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}
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]]>
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</screen>
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</example>
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</para>
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<para>
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如果在指定 <parameter>datetime</parameter>
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字符串中出现时区元素,那才会展示。在这种情况下,总会存在
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<literal>zone_type</literal> 和更多元素,具体取决于其值。
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<example>
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<title>带时区缩写信息的 <function>date_parse</function></title>
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<programlisting role="php">
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<![CDATA[
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<?php
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var_dump(date_parse("June 2nd, 2022, 10:28:17 BST"));
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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array(16) {
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["year"]=>
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int(2022)
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["month"]=>
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int(6)
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["day"]=>
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int(2)
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["hour"]=>
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int(10)
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["minute"]=>
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int(28)
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["second"]=>
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int(17)
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["fraction"]=>
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float(0)
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["warning_count"]=>
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int(0)
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["warnings"]=>
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array(0) {
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}
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["error_count"]=>
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int(0)
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["errors"]=>
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array(0) {
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}
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["is_localtime"]=>
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bool(true)
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["zone_type"]=>
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int(2)
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["zone"]=>
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int(0)
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["is_dst"]=>
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bool(true)
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["tz_abbr"]=>
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string(3) "BST"
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}
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]]>
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</screen>
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</example>
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<example>
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<title>带时区标识符信息的 <function>date_parse</function></title>
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<programlisting role="php">
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<![CDATA[
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<?php
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var_dump(date_parse("June 2nd, 2022, 10:28:17 Europe/London"));
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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array(14) {
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["year"]=>
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int(2022)
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["month"]=>
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int(6)
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["day"]=>
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int(2)
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["hour"]=>
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int(10)
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["minute"]=>
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int(28)
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["second"]=>
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int(17)
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["fraction"]=>
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float(0)
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["warning_count"]=>
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int(0)
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["warnings"]=>
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array(0) {
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}
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["error_count"]=>
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int(0)
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["errors"]=>
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array(0) {
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}
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["is_localtime"]=>
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bool(true)
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["zone_type"]=>
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int(3)
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["tz_id"]=>
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string(13) "Europe/London"
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}
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]]>
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</screen>
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</example>
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</para>
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<para>
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如果解析的 <parameter>datetime</parameter> 字符串越小,那么可用的信息就越少。再本示例中,所有时间部分都返回为 &false;。
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<example>
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<title>带最小字符串的 <function>date_parse</function></title>
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<programlisting role="php">
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<![CDATA[
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<?php
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var_dump(date_parse("June 2nd, 2022"));
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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array(12) {
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["year"]=>
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int(2022)
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["month"]=>
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int(6)
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["day"]=>
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int(2)
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["hour"]=>
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bool(false)
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["minute"]=>
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bool(false)
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["second"]=>
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bool(false)
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["fraction"]=>
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bool(false)
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["warning_count"]=>
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int(0)
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["warnings"]=>
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array(0) {
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}
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["error_count"]=>
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int(0)
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["errors"]=>
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array(0) {
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}
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["is_localtime"]=>
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bool(false)
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}
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]]>
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</screen>
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</example>
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</para>
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<para>
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<link linkend="datetime.formats.relative">相对格式</link>不会影响从绝对格式格式化的值,但会被解析为“relative”元素。
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<example>
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<title>带相对格式的 <function>date_parse</function></title>
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<programlisting role="php">
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<![CDATA[
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<?php
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var_dump(date_parse("2006-12-12 10:00:00.5 +1 week +1 hour"));
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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array(13) {
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["year"]=>
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int(2006)
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["month"]=>
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int(12)
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["day"]=>
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int(12)
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["hour"]=>
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int(10)
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["minute"]=>
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int(0)
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["second"]=>
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int(0)
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["fraction"]=>
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float(0.5)
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["warning_count"]=>
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int(0)
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["warnings"]=>
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array(0) {
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}
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["error_count"]=>
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int(0)
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["errors"]=>
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array(0) {
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}
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["is_localtime"]=>
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bool(false)
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["relative"]=>
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array(6) {
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["year"]=>
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int(0)
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["month"]=>
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int(0)
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["day"]=>
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int(7)
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["hour"]=>
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int(1)
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["minute"]=>
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int(0)
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["second"]=>
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int(0)
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}
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}
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]]>
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</screen>
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</example>
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</para>
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<para>
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在某些时候,比如 <literal>Thursday</literal> 将会设置字符串的时间部分设置为
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<literal>0</literal>。如果 <literal>Thursday</literal> 传递给
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<function>DateTimeImmutable::__construct</function> 也会导致小时,分钟,秒和小数部分设置为
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<literal>0</literal>。下面的示例中,year 元素将设置为 &false;。
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<example>
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<title>带副作用的 <function>date_parse</function></title>
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<programlisting role="php">
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<![CDATA[
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<?php
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var_dump(date_parse("Thursday, June 2nd"));
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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array(13) {
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["year"]=>
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bool(false)
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["month"]=>
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int(6)
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["day"]=>
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int(2)
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["hour"]=>
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int(0)
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["minute"]=>
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int(0)
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["second"]=>
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int(0)
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["fraction"]=>
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float(0)
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["warning_count"]=>
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int(0)
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["warnings"]=>
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array(0) {
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}
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["error_count"]=>
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int(0)
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["errors"]=>
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array(0) {
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}
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["is_localtime"]=>
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bool(false)
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["relative"]=>
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array(7) {
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["year"]=>
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int(0)
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["month"]=>
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int(0)
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["day"]=>
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int(0)
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["hour"]=>
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int(0)
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["minute"]=>
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int(0)
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["second"]=>
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int(0)
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["weekday"]=>
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int(4)
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}
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}
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]]>
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</screen>
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</example>
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</para>
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</refsect1>
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||
|
||
<refsect1 role="seealso">
|
||
&reftitle.seealso;
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||
<para>
|
||
<simplelist>
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||
<member><function>date_parse_from_format</function>,以解析具有特定格式的<parameter>datetime</parameter></member>
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||
<member><function>checkdate</function>,以便于公历日期验证</member>
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||
<member><function>getdate</function></member>
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||
</simplelist>
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</para>
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</refsect1>
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||
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</refentry>
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||
<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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||
sgml-always-quote-attributes:t
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sgml-indent-step:1
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||
sgml-indent-data:t
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indent-tabs-mode:nil
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||
sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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||
sgml-local-catalogs:nil
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||
sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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