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144 lines
5.0 KiB
HTML
144 lines
5.0 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>将迭代器中的元素拷贝到数组</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.iterator-to-array" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">iterator_to_array</h1>
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<p class="verinfo">(PHP 5 >= 5.1.0, PHP 7)</p><p class="refpurpose"><span class="refname">iterator_to_array</span> — <span class="dc-title">将迭代器中的元素拷贝到数组</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.iterator-to-array-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>iterator_to_array</strong></span>
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( <span class="methodparam"><span class="type"><a href="class.traversable.html" class="type Traversable">Traversable</a></span> <code class="parameter">$iterator</code></span>
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[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$use_keys</code><span class="initializer"> = true</span></span>
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] ) : <span class="type">array</span></div>
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<p class="para rdfs-comment">
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将迭代器中的元素拷贝到数组。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.iterator-to-array-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">iterator</code></dt>
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<dd>
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<p class="para">
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被拷贝的迭代器。
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</p>
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</dd>
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<dt>
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<code class="parameter">use_keys</code></dt>
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<dd>
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<p class="para">
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是否使用迭代器元素键作为索引。
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.iterator-to-array-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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一个数组，包含迭代器中的元素。
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.iterator-to-array-changelog">
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<h3 class="title">更新日志</h3>
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<p class="para">
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<table class="doctable informaltable">
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<thead>
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<tr>
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<th>版本</th>
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<th>说明</th>
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</tr>
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</thead>
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<tbody class="tbody">
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<tr>
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<td>5.2.1</td>
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<td>
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添加了 <code class="parameter">use_keys</code> 参数。
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</td>
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</tr>
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</tbody>
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</table>
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.iterator-to-array-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="regexiterator.getmode.example.basic">
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<p><strong>Example #1 <span class="function"><strong>iterator_to_array()</strong></span> example</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$iterator </span><span style="color: #007700">= new </span><span style="color: #0000BB">ArrayIterator</span><span style="color: #007700">(array(</span><span style="color: #DD0000">'recipe'</span><span style="color: #007700">=></span><span style="color: #DD0000">'pancakes'</span><span style="color: #007700">, </span><span style="color: #DD0000">'egg'</span><span style="color: #007700">, </span><span style="color: #DD0000">'milk'</span><span style="color: #007700">, </span><span style="color: #DD0000">'flour'</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">iterator_to_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$iterator</span><span style="color: #007700">, </span><span style="color: #0000BB">true</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">iterator_to_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$iterator</span><span style="color: #007700">, </span><span style="color: #0000BB">false</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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array(4) {
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["recipe"]=>
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string(8) "pancakes"
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[0]=>
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string(3) "egg"
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[1]=>
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string(4) "milk"
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[2]=>
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string(5) "flour"
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}
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array(4) {
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[0]=>
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string(8) "pancakes"
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[1]=>
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string(3) "egg"
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[2]=>
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string(4) "milk"
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[3]=>
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string(5) "flour"
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}
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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</div></div></div></body></html> |