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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>将一个数组分割成多个</title>
</head>
<body class="docs"><div id="layout">
<div id="layout-content"><div id="function.array-chunk" class="refentry">
<div class="refnamediv">
<h1 class="refname">array_chunk</h1>
<p class="verinfo">(PHP 4 &gt;= 4.2.0, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">array_chunk</span> &mdash; <span class="dc-title">将一个数组分割成多个</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.array-chunk-description">
<h3 class="title">说明</h3>
<div class="methodsynopsis dc-description">
<span class="methodname"><strong>array_chunk</strong></span>
( <span class="methodparam"><span class="type">array</span> <code class="parameter">$array</code></span>
, <span class="methodparam"><span class="type">int</span> <code class="parameter">$size</code></span>
[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$preserve_keys</code><span class="initializer"> = false</span></span>
] ) : <span class="type">array</span></div>
<p class="para rdfs-comment">
将一个数组分割成多个数组，其中每个数组的单元数目由
<code class="parameter">size</code> 决定。最后一个数组的单元数目可能会少于 <code class="parameter">size</code> 个。
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.array-chunk-parameters">
<h3 class="title">参数</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">array</code></dt>
<dd>
<p class="para">
需要操作的数组
</p>
</dd>
<dt>
<code class="parameter">size</code></dt>
<dd>
<p class="para">
每个数组的单元数目
</p>
</dd>
<dt>
<code class="parameter">preserve_keys</code></dt>
<dd>
<p class="para">
设为 <strong><code>TRUE</code></strong>，可以使 PHP
保留输入数组中原来的键名。如果你指定了 <strong><code>FALSE</code></strong>，那每个结果数组将用从零开始的新数字索引。默认值是 <strong><code>FALSE</code></strong>。
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.array-chunk-returnvalues">
<h3 class="title">返回值</h3>
<p class="para">
得到的数组是一个多维数组中的单元，其索引从零开始，每一维包含了 <code class="parameter">size</code> 个元素。
</p>
</div>
<div class="refsect1 errors" id="refsect1-function.array-chunk-errors">
<h3 class="title">错误／异常</h3>
<p class="para">
如果 <code class="parameter">size</code> 小于 1，会抛出一个
<strong><code>E_WARNING</code></strong> 错误并返回 <strong><code>NULL</code></strong>。
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.array-chunk-examples">
<h3 class="title">范例</h3>
<p class="para">
<div class="example" id="example-6012">
<p><strong>Example #1 <span class="function"><strong>array_chunk()</strong></span> 例子</strong></p>
<div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$input_array&nbsp;</span><span style="color: #007700">=&nbsp;array(</span><span style="color: #DD0000">'a'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'b'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'c'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'d'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'e'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">array_chunk</span><span style="color: #007700">(</span><span style="color: #0000BB">$input_array</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">2</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">array_chunk</span><span style="color: #007700">(</span><span style="color: #0000BB">$input_array</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">2</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">true</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
</div>
<div class="example-contents"><p>以上例程会输出：</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
Array
(
[0] =&gt; Array
(
[0] =&gt; a
[1] =&gt; b
)
[1] =&gt; Array
(
[0] =&gt; c
[1] =&gt; d
)
[2] =&gt; Array
(
[0] =&gt; e
)
)
Array
(
[0] =&gt; Array
(
[0] =&gt; a
[1] =&gt; b
)
[1] =&gt; Array
(
[2] =&gt; c
[3] =&gt; d
)
[2] =&gt; Array
(
[4] =&gt; e
)
)
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.array-chunk-seealso">
<h3 class="title">参见</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="array_slice.html" class="function" rel="rdfs-seeAlso">array_slice()</a> - 从数组中取出一段</span></li>
</ul>
</p>
</div>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>将一个数组分割成多个</title>
</head>
<body class="docs"><div id="layout">
<div id="layout-content"><div id="function.array-chunk" class="refentry">
<div class="refnamediv">
<h1 class="refname">array_chunk</h1>
<p class="verinfo">(PHP 4 &gt;= 4.2.0, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">array_chunk</span> &mdash; <span class="dc-title">将一个数组分割成多个</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.array-chunk-description">
<h3 class="title">说明</h3>
<div class="methodsynopsis dc-description">
<span class="methodname"><strong>array_chunk</strong></span>
( <span class="methodparam"><span class="type">array</span> <code class="parameter">$array</code></span>
, <span class="methodparam"><span class="type">int</span> <code class="parameter">$size</code></span>
[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$preserve_keys</code><span class="initializer"> = false</span></span>
] ) : <span class="type">array</span></div>
<p class="para rdfs-comment">
将一个数组分割成多个数组，其中每个数组的单元数目由
<code class="parameter">size</code> 决定。最后一个数组的单元数目可能会少于 <code class="parameter">size</code> 个。
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.array-chunk-parameters">
<h3 class="title">参数</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">array</code></dt>
<dd>
<p class="para">
需要操作的数组
</p>
</dd>
<dt>
<code class="parameter">size</code></dt>
<dd>
<p class="para">
每个数组的单元数目
</p>
</dd>
<dt>
<code class="parameter">preserve_keys</code></dt>
<dd>
<p class="para">
设为 <strong><code>TRUE</code></strong>，可以使 PHP
保留输入数组中原来的键名。如果你指定了 <strong><code>FALSE</code></strong>，那每个结果数组将用从零开始的新数字索引。默认值是 <strong><code>FALSE</code></strong>。
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.array-chunk-returnvalues">
<h3 class="title">返回值</h3>
<p class="para">
得到的数组是一个多维数组中的单元，其索引从零开始，每一维包含了 <code class="parameter">size</code> 个元素。
</p>
</div>
<div class="refsect1 errors" id="refsect1-function.array-chunk-errors">
<h3 class="title">错误／异常</h3>
<p class="para">
如果 <code class="parameter">size</code> 小于 1，会抛出一个
<strong><code>E_WARNING</code></strong> 错误并返回 <strong><code>NULL</code></strong>。
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.array-chunk-examples">
<h3 class="title">范例</h3>
<p class="para">
<div class="example" id="example-6012">
<p><strong>Example #1 <span class="function"><strong>array_chunk()</strong></span> 例子</strong></p>
<div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$input_array&nbsp;</span><span style="color: #007700">=&nbsp;array(</span><span style="color: #DD0000">'a'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'b'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'c'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'d'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'e'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">array_chunk</span><span style="color: #007700">(</span><span style="color: #0000BB">$input_array</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">2</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">array_chunk</span><span style="color: #007700">(</span><span style="color: #0000BB">$input_array</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">2</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">true</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
</div>
<div class="example-contents"><p>以上例程会输出：</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
Array
(
[0] =&gt; Array
(
[0] =&gt; a
[1] =&gt; b
)
[1] =&gt; Array
(
[0] =&gt; c
[1] =&gt; d
)
[2] =&gt; Array
(
[0] =&gt; e
)
)
Array
(
[0] =&gt; Array
(
[0] =&gt; a
[1] =&gt; b
)
[1] =&gt; Array
(
[2] =&gt; c
[3] =&gt; d
)
[2] =&gt; Array
(
[4] =&gt; e
)
)
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.array-chunk-seealso">
<h3 class="title">参见</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="array_slice.html" class="function" rel="rdfs-seeAlso">array_slice()</a> - 从数组中取出一段</span></li>
</ul>
</p>
</div>
</div></div></div></body></html>