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71 lines
2.5 KiB
HTML
71 lines
2.5 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>Enable/disable asynchronous signal handling or return the old setting</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.pcntl-async-signals" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">pcntl_async_signals</h1>
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<p class="verinfo">(PHP 7 >= 7.1.0)</p><p class="refpurpose"><span class="refname">pcntl_async_signals</span> — <span class="dc-title">Enable/disable asynchronous signal handling or return the old setting</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.pcntl-async-signals-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>pcntl_async_signals</strong></span>
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([ <span class="methodparam"><span class="type">bool</span> <code class="parameter">$on</code><span class="initializer"> = <strong><code>NULL</code></strong></span></span>
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] ) : <span class="type">bool</span></div>
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<p class="para rdfs-comment">
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If the <code class="parameter">on</code> parameter is omitted,
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<span class="function"><strong>pcntl_async_signals()</strong></span> returns whether asynchronous signal
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handling is enabled. Otherwise, asynchronous signal handling is enabled or
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disabled.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.pcntl-async-signals-parameters">
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<h3 class="title">参数</h3>
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<dl>
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<dt>
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<code class="parameter">on</code></dt>
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<dd>
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<p class="para">
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Whether asynchronous signal handling should be enabled.
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</p>
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</dd>
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</dl>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.pcntl-async-signals-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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When used as getter (that is without the optional parameter) it returns
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whether asynchronous signal handling is enabled. When used as setter (that is
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with the optional parameter given), it returns whether asynchronous signal
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handling was enabled <em class="emphasis">before</em> the function call.
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.pcntl-async-signals-seealso">
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<h3 class="title">参见</h3>
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<ul class="simplelist">
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<li class="member"><a href="control_structures.declare.html" class="link">declare</a></li>
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</ul>
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</div>
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</div></div></div></body></html> |