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77 lines
2.7 KiB
HTML
77 lines
2.7 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>Release a semaphore</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.sem-release" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">sem_release</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">sem_release</span> — <span class="dc-title">Release a semaphore</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.sem-release-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>sem_release</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$sem_identifier</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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<span class="function"><strong>sem_release()</strong></span> releases the semaphore if it
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is currently acquired by the calling process, otherwise
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a warning is generated.
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</p>
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<p class="para">
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After releasing the semaphore, <span class="function"><a href="sem_acquire.html" class="function">sem_acquire()</a></span>
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may be called to re-acquire it.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.sem-release-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">sem_identifier</code></dt>
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<dd>
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<p class="para">
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A Semaphore resource handle as returned by
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<span class="function"><a href="sem_get.html" class="function">sem_get()</a></span>.
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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.sem-release-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 seealso" id="refsect1-function.sem-release-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="sem_get.html" class="function" rel="rdfs-seeAlso">sem_get()</a> - Get a semaphore id</span></li>
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<li class="member"><span class="function"><a href="sem_acquire.html" class="function" rel="rdfs-seeAlso">sem_acquire()</a> - Acquire a semaphore</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> |