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83 lines
3.3 KiB
HTML
83 lines
3.3 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>计算迭代器中元素的个数</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-count" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">iterator_count</h1>
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<p class="verinfo">(PHP 5 >= 5.1.0, PHP 7)</p><p class="refpurpose"><span class="refname">iterator_count</span> — <span class="dc-title">计算迭代器中元素的个数</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.iterator-count-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_count</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="type">int</span></div>
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<p class="para rdfs-comment">
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计算迭代器中的元素个数。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.iterator-count-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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要计数的迭代器。
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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-count-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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迭代器<code class="parameter">iterator</code>中的元素个数。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.iterator-count-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.getflags.example.basic">
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<p><strong>Example #1 <span class="function"><strong>iterator_count()</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_count</span><span style="color: #007700">(</span><span style="color: #0000BB">$iterator</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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int(4)
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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> |