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https://github.com/fofolee/uTools-Manuals.git
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135 lines
4.8 KiB
HTML
135 lines
4.8 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>从缓存中取出存储的变量</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.apc-fetch" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">apc_fetch</h1>
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<p class="verinfo">(PECL apc >= 3.0.0)</p><p class="refpurpose"><span class="refname">apc_fetch</span> — <span class="dc-title">
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从缓存中取出存储的变量
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</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.apc-fetch-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>apc_fetch</strong></span>
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( <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$key</code></span>
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[, <span class="methodparam"><span class="type">bool</span> <code class="parameter reference">&$success</code></span>
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] ) : <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span></div>
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<p class="para rdfs-comment">
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从缓存中取出存储的变量
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.apc-fetch-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">key</code></dt>
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<dd>
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<p class="para">
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<code class="parameter">key</code> 是使用
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<span class="function"><a href="apc_store.html" class="function">apc_store()</a></span> 存储的键名。
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如果传递的是一个数组，则数组中的每个元素的值都被返回
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</p>
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</dd>
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<dt>
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<code class="parameter">success</code></dt>
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<dd>
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<p class="para">
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成功时为 <strong><code>TRUE</code></strong> 失败时 <strong><code>FALSE</code></strong>。
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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.apc-fetch-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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存储一个变量或者一个数组失败时返回; <strong><code>FALSE</code></strong>
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.apc-fetch-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-407">
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<p><strong>Example #1 <span class="function"><strong>apc_fetch()</strong></span> 范例</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 />$bar </span><span style="color: #007700">= </span><span style="color: #DD0000">'BAR'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">apc_store</span><span style="color: #007700">(</span><span style="color: #DD0000">'foo'</span><span style="color: #007700">, </span><span style="color: #0000BB">$bar</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">apc_fetch</span><span style="color: #007700">(</span><span style="color: #DD0000">'foo'</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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string(3) "BAR"
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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 changelog" id="refsect1-function.apc-fetch-changelog">
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<h3 class="title">更新日志</h3>
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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>3.0.17</td>
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<td>
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The <code class="parameter">success</code> parameter was added.
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.apc-fetch-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="apc_store.html" class="function" rel="rdfs-seeAlso">apc_store()</a> - Cache a variable in the data store</span></li>
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<li class="member"><span class="function"><a href="apc_delete.html" class="function" rel="rdfs-seeAlso">apc_delete()</a> - 从用户缓存中删除某个变量</span></li>
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<li class="member"><a href="class.apciterator.html" class="classname">APCIterator</a></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> |