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111 lines
4.9 KiB
HTML
111 lines
4.9 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>统计数组中所有的值</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.array-count-values" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">array_count_values</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">array_count_values</span> — <span class="dc-title">统计数组中所有的值</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.array-count-values-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>array_count_values</strong></span>
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( <span class="methodparam"><span class="type">array</span> <code class="parameter">$array</code> </span>
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) : <span class="type">array</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>array_count_values()</strong></span> 返回一个数组：
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数组的键是 <code class="parameter">array</code> 里单元的值；
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数组的值是 <code class="parameter">array</code> 单元的值出现的次数。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.array-count-values-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">input</code></dt>
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<dd>
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<p class="para">
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统计这个数组的值
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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.array-count-values-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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返回一个关联数组，用 <code class="parameter">array</code>
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数组中的值作为键名，该值在数组中出现的次数作为值。
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</p>
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</div>
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<div class="refsect1 errors" id="refsect1-function.array-count-values-errors">
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<h3 class="title">错误／异常</h3>
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<p class="para">
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对数组里面的每个不是 <span class="type"><a href="language.types.string.html" class="type string">string</a></span> 和 <span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span> 类型的元素抛出一个警告错误（<strong><code>E_WARNING</code></strong>）。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.array-count-values-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="example-6018">
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<p><strong>Example #1 <span class="function"><strong>array_count_values()</strong></span> 例子</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 />$array </span><span style="color: #007700">= array(</span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #DD0000">"hello"</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #DD0000">"world"</span><span style="color: #007700">, </span><span style="color: #DD0000">"hello"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">array_count_values</span><span style="color: #007700">(</span><span style="color: #0000BB">$array</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
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(
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[1] => 2
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[hello] => 2
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[world] => 1
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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 class="refsect1 seealso" id="refsect1-function.array-count-values-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="count.html" class="function" rel="rdfs-seeAlso">count()</a> - 计算数组中的单元数目，或对象中的属性个数</span></li>
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<li class="member"><span class="function"><a href="array_unique.html" class="function" rel="rdfs-seeAlso">array_unique()</a> - 移除数组中重复的值</span></li>
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<li class="member"><span class="function"><a href="array_values.html" class="function" rel="rdfs-seeAlso">array_values()</a> - 返回数组中所有的值</span></li>
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<li class="member"><span class="function"><a href="count_chars.html" class="function" rel="rdfs-seeAlso">count_chars()</a> - 返回字符串所用字符的信息</span></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |