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103 lines
6.2 KiB
HTML
103 lines
6.2 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>设置客户端断开连接时是否中断脚本的执行</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.ignore-user-abort" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">ignore_user_abort</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">ignore_user_abort</span> — <span class="dc-title">设置客户端断开连接时是否中断脚本的执行</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.ignore-user-abort-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>ignore_user_abort</strong></span>
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([ <span class="methodparam"><span class="type">bool</span> <code class="parameter">$value</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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设置客户端断开连接时是否中断脚本的执行
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</p>
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<p class="para">
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PHP 以命令行脚本执行时，当脚本终端结束，脚本不会被立即中止，除非设置 <code class="parameter">value</code> 为 <strong><code>TRUE</code></strong>，否则脚本输出任意字符时会被中止。</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.ignore-user-abort-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">value</code></dt>
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<dd>
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<p class="para">
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如果设置了该值，函数会把 <a href="misc.configuration.html#ini.ignore-user-abort" class="link">ignore_user_abort</a> ini 的值设置为 <code class="parameter">value</code>。
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如果未设置该值，函数不会改变设置，仅会返回之前的设置。
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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.ignore-user-abort-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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以整型返回之前的设置
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.ignore-user-abort-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-4542">
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<p><strong>Example #1 <span class="function"><strong>ignore_user_abort()</strong></span>例子</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 /></span><span style="color: #FF8000">// Ignore user aborts and allow the script<br />// to run forever<br /></span><span style="color: #0000BB">ignore_user_abort</span><span style="color: #007700">(</span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">set_time_limit</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #DD0000">'Testing connection handling in PHP'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Run a pointless loop that sometime <br />// hopefully will make us click away from <br />// page or click the "Stop" button.<br /></span><span style="color: #007700">while(</span><span style="color: #0000BB">1</span><span style="color: #007700">)<br />{<br /> </span><span style="color: #FF8000">// Did the connection fail?<br /> </span><span style="color: #007700">if(</span><span style="color: #0000BB">connection_status</span><span style="color: #007700">() != </span><span style="color: #0000BB">CONNECTION_NORMAL</span><span style="color: #007700">)<br /> {<br /> break;<br /> }<br /><br /> </span><span style="color: #FF8000">// Sleep for 10 seconds<br /> </span><span style="color: #0000BB">sleep</span><span style="color: #007700">(</span><span style="color: #0000BB">10</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #FF8000">// If this is reached, then the 'break' <br />// was triggered from inside the while loop<br /><br />// So here we can log, or perform any other tasks<br />// we need without actually being dependent on the <br />// browser.<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 notes" id="refsect1-function.ignore-user-abort-notes">
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<h3 class="title">注释</h3>
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<p class="para">
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在PHP尝试发送信息到客户端之前，不会检测到用户是否已中断连接。
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仅使用 echo 语句不能确保信息已发送，参见 <span class="function"><a href="flush.html" class="function">flush()</a></span> 函数。
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.ignore-user-abort-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="connection_aborted.html" class="function" rel="rdfs-seeAlso">connection_aborted()</a> - 检查客户端是否已经断开</span></li>
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<li class="member"><span class="function"><a href="connection_status.html" class="function" rel="rdfs-seeAlso">connection_status()</a> - 返回连接的状态位</span></li>
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<li class="member">
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<a href="features.connection_handling.html" class="link">Connection Handling</a>
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关于PHP连接处理的完整描述。
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</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> |