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124 lines
5.3 KiB
HTML
124 lines
5.3 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>Compares the variable with old value and assigns new value to it</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-cas" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">wincache_ucache_cas</h1>
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<p class="verinfo">(PECL wincache >= 1.1.0)</p><p class="refpurpose"><span class="refname">wincache_ucache_cas</span> — <span class="dc-title">
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Compares the variable with old value and assigns new value to it
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</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.wincache-ucache-cas-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_cas</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$key</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$old_value</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$new_value</code></span>
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) : <span class="type">bool</span></div>
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<p class="para rdfs-comment">
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Compares the variable associated with the <code class="parameter">key</code> with <code class="parameter">old_value</code>
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and if it matches then assigns the <code class="parameter">new_value</code> to it.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.wincache-ucache-cas-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 is used to store the variable in the cache.
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<code class="parameter">key</code> is case sensitive.
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</p>
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</dd>
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<dt>
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<code class="parameter">old_value</code></dt>
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<dd>
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<p class="para">
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Old value of the variable pointed by <code class="parameter">key</code> in the user cache.
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The value should be of type <em>long</em>, otherwise the function returns
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<strong><code>FALSE</code></strong>.
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</p>
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</dd>
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<dt>
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<code class="parameter">new_value</code></dt>
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<dd>
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<p class="para">
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New value which will get assigned to variable pointer by <code class="parameter">key</code> if a
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match is found. The value should be of type <em>long</em>, otherwise
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the function returns <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.wincache-ucache-cas-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <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.wincache-ucache-cas-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-622">
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<p><strong>Example #1 Using <span class="function"><strong>wincache_ucache_cas()</strong></span></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_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'counter'</span><span style="color: #007700">, </span><span style="color: #0000BB">2922</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_cas</span><span style="color: #007700">(</span><span style="color: #DD0000">'counter'</span><span style="color: #007700">, </span><span style="color: #0000BB">2922</span><span style="color: #007700">, </span><span style="color: #0000BB">1</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">'counter'</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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bool(true)
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int(1)
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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-cas-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_inc.html" class="function" rel="rdfs-seeAlso">wincache_ucache_inc()</a> - Increments the value associated with the key</span></li>
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<li class="member"><span class="function"><a href="wincache_ucache_dec.html" class="function" rel="rdfs-seeAlso">wincache_ucache_dec()</a> - Decrements the value associated with the key</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> |