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109 lines
5.8 KiB
HTML
109 lines
5.8 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>Get the current handler for specified signal</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-signal-get-handler" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">pcntl_signal_get_handler</h1>
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<p class="verinfo">(PHP 7 >= 7.1.0)</p><p class="refpurpose"><span class="refname">pcntl_signal_get_handler</span> — <span class="dc-title">Get the current handler for specified signal</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.pcntl-signal-get-handler-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_signal_get_handler</strong></span>
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( <span class="methodparam"><span class="type">int</span> <code class="parameter">$signo</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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The <span class="function"><strong>pcntl_signal_get_handler()</strong></span> function will get the current handler for the specified <code class="parameter">signo</code>.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.pcntl-signal-get-handler-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">signo</code></dt>
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<dd>
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<p class="para">
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The signal number.
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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-signal-get-handler-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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This function may return an integer value that refers to <strong><code>SIG_DFL</code></strong> or <strong><code>SIG_IGN</code></strong>. If you set a custom handler a string value containing the function name is returned.
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.pcntl-signal-get-handler-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>7.1.0</td>
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<td>
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<span class="function"><strong>pcntl_signal_get_handler()</strong></span> has been 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 examples" id="refsect1-function.pcntl-signal-get-handler-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-4327">
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<p><strong>Example #1 <span class="function"><strong>pcntl_signal_get_handler()</strong></span> example</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 />var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">pcntl_signal_get_handler</span><span style="color: #007700">(</span><span style="color: #0000BB">SIGUSR1</span><span style="color: #007700">)); </span><span style="color: #FF8000">// Outputs: int(0)<br /><br /></span><span style="color: #007700">function </span><span style="color: #0000BB">pcntl_test</span><span style="color: #007700">(</span><span style="color: #0000BB">$signo</span><span style="color: #007700">) {}<br /></span><span style="color: #0000BB">pcntl_signal</span><span style="color: #007700">(</span><span style="color: #0000BB">SIGUSR1</span><span style="color: #007700">, </span><span style="color: #DD0000">'pcntl_test'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">pcntl_signal_get_handler</span><span style="color: #007700">(</span><span style="color: #0000BB">SIGUSR1</span><span style="color: #007700">)); </span><span style="color: #FF8000">// Outputs: string(10) "pcntl_test"<br /><br /></span><span style="color: #0000BB">pcntl_signal</span><span style="color: #007700">(</span><span style="color: #0000BB">SIGUSR1</span><span style="color: #007700">, </span><span style="color: #0000BB">SIG_DFL</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">pcntl_signal_get_handler</span><span style="color: #007700">(</span><span style="color: #0000BB">SIGUSR1</span><span style="color: #007700">)); </span><span style="color: #FF8000">// Outputs: int(0)<br /><br /></span><span style="color: #0000BB">pcntl_signal</span><span style="color: #007700">(</span><span style="color: #0000BB">SIGUSR1</span><span style="color: #007700">, </span><span style="color: #0000BB">SIG_IGN</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">pcntl_signal_get_handler</span><span style="color: #007700">(</span><span style="color: #0000BB">SIGUSR1</span><span style="color: #007700">)); </span><span style="color: #FF8000">// Outputs: int(1)<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>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.pcntl-signal-get-handler-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"><span class="function"><a href="pcntl_signal.html" class="function" rel="rdfs-seeAlso">pcntl_signal()</a> - 安装一个信号处理器</span></li>
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</ul>
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</div>
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</div></div></div></body></html> |