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147 lines
9.4 KiB
HTML
147 lines
9.4 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>Gets a variable stored in the user cache</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.wincache-ucache-get" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">wincache_ucache_get</h1>
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<p class="verinfo">(PECL wincache >= 1.1.0)</p><p class="refpurpose"><span class="refname">wincache_ucache_get</span> — <span class="dc-title">
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Gets a variable stored in the user cache
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</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.wincache-ucache-get-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>wincache_ucache_get</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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Gets a variable stored in the user cache.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.wincache-ucache-get-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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The <code class="parameter">key</code> that was used to store the variable in the cache.
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<code class="parameter">key</code> is case sensitive. <code class="parameter">key</code> can be an
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array of keys. In this case the return value will be an array of values of each element
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in the <code class="parameter">key</code> array. If an object, or an array containing objects,
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is returned, then the objects will be unserialized. See
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<a href="language.oop5.magic.html#object.wakeup" class="link">__wakeup()</a> for details on unserializing objects.
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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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Will be set to <strong><code>TRUE</code></strong> on success and <strong><code>FALSE</code></strong> on failure.
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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.wincache-ucache-get-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="simpara">
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If <code class="parameter">key</code> is a string, the function returns the value of the variable stored with that key.
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The <code class="parameter">success</code> is set to <strong><code>TRUE</code></strong> on success and
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to <strong><code>FALSE</code></strong> on failure.
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</p>
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<p class="simpara">
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The <code class="parameter">key</code> is an array, the parameter <code class="parameter">success</code>
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is always set to <strong><code>TRUE</code></strong>. The returned array (name => value pairs) will
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contain only those name => value pairs for which the get operation in user cache was
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successful. If none of the keys in the key array finds a match in the user cache
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an empty array will be returned.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.wincache-ucache-get-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-629">
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<p><strong>Example #1 <span class="function"><strong>wincache_ucache_get()</strong></span> with <code class="parameter">key</code> as a string</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 />wincache_ucache_add</span><span style="color: #007700">(</span><span style="color: #DD0000">'color'</span><span style="color: #007700">, </span><span style="color: #DD0000">'blue'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">wincache_ucache_get</span><span style="color: #007700">(</span><span style="color: #DD0000">'color'</span><span style="color: #007700">, </span><span style="color: #0000BB">$success</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$success</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(4) "blue"
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bool(true)
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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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<p class="para">
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<div class="example" id="example-630">
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<p><strong>Example #2 <span class="function"><strong>wincache_ucache_get()</strong></span> with <code class="parameter">key</code> as an array</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 />$array1 </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'green' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'5'</span><span style="color: #007700">, </span><span style="color: #DD0000">'Blue' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'6'</span><span style="color: #007700">, </span><span style="color: #DD0000">'yellow' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'7'</span><span style="color: #007700">, </span><span style="color: #DD0000">'cyan' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'8'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">wincache_ucache_set</span><span style="color: #007700">(</span><span style="color: #0000BB">$array1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$array2 </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'green'</span><span style="color: #007700">, </span><span style="color: #DD0000">'Blue'</span><span style="color: #007700">, </span><span style="color: #DD0000">'yellow'</span><span style="color: #007700">, </span><span style="color: #DD0000">'cyan'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">wincache_ucache_get</span><span style="color: #007700">(</span><span style="color: #0000BB">$array2</span><span style="color: #007700">, </span><span style="color: #0000BB">$success</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$success</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) { ["green"]=> string(1) "5"
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["Blue"]=> string(1) "6"
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["yellow"]=> string(1) "7"
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["cyan"]=> string(1) "8" }
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bool(true)
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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.wincache-ucache-get-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="wincache_ucache_add.html" class="function" rel="rdfs-seeAlso">wincache_ucache_add()</a> - Adds a variable in user cache only if variable does not already exist in the cache</span></li>
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<li class="member"><span class="function"><a href="wincache_ucache_set.html" class="function" rel="rdfs-seeAlso">wincache_ucache_set()</a> - Adds a variable in user cache and overwrites a variable if it already exists in the cache</span></li>
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<li class="member"><span class="function"><a href="wincache_ucache_delete.html" class="function" rel="rdfs-seeAlso">wincache_ucache_delete()</a> - Deletes variables from the user cache</span></li>
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<li class="member"><span class="function"><a href="wincache_ucache_clear.html" class="function" rel="rdfs-seeAlso">wincache_ucache_clear()</a> - Deletes entire content of the user cache</span></li>
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<li class="member"><span class="function"><a href="wincache_ucache_exists.html" class="function" rel="rdfs-seeAlso">wincache_ucache_exists()</a> - Checks if a variable exists in the user cache</span></li>
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<li class="member"><span class="function"><a href="wincache_ucache_meminfo.html" class="function" rel="rdfs-seeAlso">wincache_ucache_meminfo()</a> - Retrieves information about user cache memory usage</span></li>
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<li class="member"><span class="function"><a href="wincache_ucache_info.html" class="function" rel="rdfs-seeAlso">wincache_ucache_info()</a> - Retrieves information about data stored in the user cache</span></li>
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<li class="member"><a href="language.oop5.magic.html#object.wakeup" class="link">__wakeup()</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> |