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141 lines
3.7 KiB
XML
Executable File
141 lines
3.7 KiB
XML
Executable File
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: 755faca201b5ba15e23735f21ed056b47d954398 Maintainer: daijie Status: ready -->
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<refentry xml:id="function.range" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>range</refname>
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<refpurpose>根据范围创建数组，包含指定的元素</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>range</methodname>
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<methodparam><type class="union"><type>string</type><type>int</type><type>float</type></type><parameter>start</parameter></methodparam>
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<methodparam><type class="union"><type>string</type><type>int</type><type>float</type></type><parameter>end</parameter></methodparam>
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<methodparam choice="opt"><type class="union"><type>int</type><type>float</type></type><parameter>step</parameter><initializer>1</initializer></methodparam>
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</methodsynopsis>
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<para>
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建立一个包含指定范围单元的数组。
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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>start</parameter></term>
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<listitem>
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<para>
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序列的第一个值。
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>end</parameter></term>
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<listitem>
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<para>
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序列结束于 <parameter>end</parameter> 的值。
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>step</parameter></term>
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<listitem>
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<para>
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如果设置了步长 <parameter>step</parameter>，会被作为单元之间的步进值。<parameter>step</parameter>
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应该为正值。不设置<parameter>step</parameter> 则默认为 1。
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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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返回的数组中从
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<parameter>start</parameter> 到 <parameter>end</parameter> （含 start 和 end）的单元。
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</para>
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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><function>range</function> 例子</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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// array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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foreach (range(0, 12) as $number) {
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echo $number;
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}
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echo "\n";
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// step 参数
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// array(0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100)
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foreach (range(0, 100, 10) as $number) {
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echo $number;
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}
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echo "\n";
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// 字符序列的使用
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// array('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i');
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foreach (range('a', 'i') as $letter) {
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echo $letter;
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}
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echo "\n";
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// array('c', 'b', 'a');
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foreach (range('c', 'a') as $letter) {
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echo $letter;
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}
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?>
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]]>
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</programlisting>
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</example>
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</para>
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</refsect1>
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<refsect1 role="notes">
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&reftitle.notes;
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<note>
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<para>
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字符序列值仅限单个字符。
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如果长度大于 1，仅仅使用第一个字符。
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</para>
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</note>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>shuffle</function></member>
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<member><function>array_fill</function></member>
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<member>&foreach;</member>
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</simplelist>
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</para>
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</refsect1>
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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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