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array-fill.xml
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: ce882c196dce81bf6bd4d94af4fa4110ddc49ef4 Maintainer: dallas Status: ready -->
<!-- CREDITS: mowangjuanzi -->
<refentry xml:id="function.array-fill" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>array_fill</refname>
<refpurpose>用给定的值填充数组</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>array</type><methodname>array_fill</methodname>
<methodparam><type>int</type><parameter>start_index</parameter></methodparam>
<methodparam><type>int</type><parameter>count</parameter></methodparam>
<methodparam><type>mixed</type><parameter>value</parameter></methodparam>
</methodsynopsis>
<para>
用 <parameter>value</parameter> 参数的值填充 <parameter>count</parameter> 个元素到数组,
开始键名由 <parameter>start_index</parameter> 参数指定。
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>start_index</parameter></term>
<listitem>
<para>
返回的数组的第一个索引值。
</para>
<para>
如果 <parameter>start_index</parameter> 是负数,在 PHP 8.0.0
之前,返回的数组的第一个索引是 <parameter>start_index</parameter>,
而后面索引则从 0 开始;自 PHP 8.0.0 起,
负数键将会正常递增。(参见 <link linkend="function.array-fill.example.basic">例子</link>)
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>count</parameter></term>
<listitem>
<para>
要插入元素的数量。必须大于或等于 0 且小于或等于 <literal>2147483647</literal>。
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>value</parameter></term>
<listitem>
<para>
用来填充的值。
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
返回填充后的数组。
</para>
</refsect1>
<refsect1 role="errors">
&reftitle.errors;
<para>
如果 <parameter>count</parameter> 超出范围,将会抛出 <classname>ValueError</classname>。
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.0.0</entry>
<entry>
如果 <function>array_fill</function> 的 <parameter>count</parameter>
超出范围现在将会抛出 <classname>ValueError</classname>,
之前会引发 <constant>E_WARNING</constant> 且函数返回 &false;。
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example xml:id="function.array-fill.example.basic">
<title><function>array_fill</function> 例子</title>
<programlisting role="php">
<![CDATA[
<?php
$a = array_fill(5, 6, 'banana');
print_r($a);
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
Array
(
[5] => banana
[6] => banana
[7] => banana
[8] => banana
[9] => banana
[10] => banana
)
]]>
</screen>
</example>
</para>
<para>
<example xml:id="function.array-fill.example.negative-start-index">
<title>开始索引为负数的 <function>array_fill</function> 示例</title>
<programlisting role="php">
<![CDATA[
<?php
$a = array_fill(-2, 4, 'pear');
print_r($a);
?>
]]>
</programlisting>
&example.outputs.7;
<screen>
<![CDATA[
Array
(
[-2] => pear
[0] => pear
[1] => pear
[2] => pear
)
]]>
</screen>
&example.outputs.8;
<screen>
<![CDATA[
Array
(
[-2] => pear
[-1] => pear
[0] => pear
[1] => pear
)
]]>
</screen>
</example>
</para>
<para>
注意 索引 <literal>-1</literal> 在 PHP 8.0.0 之前不存在。
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
<para>
参见手册上<link linkend="language.types.array">数组</link>一节里关于负数的键的详细解释。
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>array_fill_keys</function></member>
<member><function>str_repeat</function></member>
<member><function>range</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
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sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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-->