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73 lines
2.9 KiB
HTML
73 lines
2.9 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>关闭由 proc_open 打开的进程并且返回进程退出码</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.proc-close" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">proc_close</h1>
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<p class="verinfo">(PHP 4 >= 4.3.0, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">proc_close</span> — <span class="dc-title">关闭由 <span class="function"><a href="proc_open.html" class="function">proc_open()</a></span> 打开的进程并且返回进程退出码</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.proc-close-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>proc_close</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$process</code></span>
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) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>proc_close()</strong></span> 同 <span class="function"><a href="pclose.html" class="function">pclose()</a></span> 函数类似，
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只是 <span class="function"><strong>proc_close()</strong></span>
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只能用来关闭由 <span class="function"><a href="proc_open.html" class="function">proc_open()</a></span> 函数打开的进程。
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<span class="function"><strong>proc_close()</strong></span> 函数会等待进程终止，
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并且返回进程的返回值。
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如果有连接到进程的已经打开的管道，
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那么需要在调用此函数之前调用 <span class="function"><a href="fclose.html" class="function">fclose()</a></span> 函数来关闭管道，
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否则会引发死锁 - 在管道处于打开状态时，子进程将不能退出。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.proc-close-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">process</code></dt>
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<dd>
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<p class="para">
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要关闭的由 <span class="function"><a href="proc_open.html" class="function">proc_open()</a></span> 打开的 <span class="type"><a href="language.types.resource.html" class="type resource">resource</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.proc-close-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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返回进程的终止状态码。
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如果发生错误，将返回 <em>-1</em>。
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</p>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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If PHP has been compiled with --enable-sigchild, the return value of this function is undefined.
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</p>
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</p></blockquote>
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</div>
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</div></div></div></body></html> |