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104 lines
9.6 KiB
HTML
104 lines
9.6 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>运行当前 cURL 句柄的子连接</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.curl-multi-exec" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">curl_multi_exec</h1>
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<p class="verinfo">(PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">curl_multi_exec</span> — <span class="dc-title">运行当前 cURL 句柄的子连接</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.curl-multi-exec-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>curl_multi_exec</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$mh</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter reference">&$still_running</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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处理在栈中的每一个句柄。无论该句柄需要读取或写入数据都可调用此方法。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.curl-multi-exec-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">mh</code>
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</dt>
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<dd>
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<p class="para">由 <span class="function"><a href="curl_multi_init.html" class="function">curl_multi_init()</a></span> 返回的 cURL 多个句柄。</p></dd>
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<dt>
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<code class="parameter">still_running</code></dt>
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<dd>
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<p class="para">
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一个用来判断操作是否仍在执行的标识的引用。
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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.curl-multi-exec-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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一个定义于 cURL <a href="curl.constants.html" class="link">预定义常量</a>中的 cURL 代码。
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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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该函数仅返回关于整个批处理栈相关的错误。即使返回
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<strong><code>CURLM_OK</code></strong> 时单个传输仍可能有问题。
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</p>
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</p></blockquote>
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</div>
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<div class="refsect1 examples" id="refsect1-function.curl-multi-exec-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-5245">
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<p><strong>Example #1 <span class="function"><strong>curl_multi_exec()</strong></span> example</strong></p>
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<div class="example-contents"><p>
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这个范例将会创建 2 个 cURL 句柄，把它们加到批处理句柄，然后并行地运行它们。
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</p></div>
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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">// 创建一对cURL资源<br /></span><span style="color: #0000BB">$ch1 </span><span style="color: #007700">= </span><span style="color: #0000BB">curl_init</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$ch2 </span><span style="color: #007700">= </span><span style="color: #0000BB">curl_init</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">// 设置URL和相应的选项<br /></span><span style="color: #0000BB">curl_setopt</span><span style="color: #007700">(</span><span style="color: #0000BB">$ch1</span><span style="color: #007700">, </span><span style="color: #0000BB">CURLOPT_URL</span><span style="color: #007700">, </span><span style="color: #DD0000">"http://lxr.php.net/"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">curl_setopt</span><span style="color: #007700">(</span><span style="color: #0000BB">$ch1</span><span style="color: #007700">, </span><span style="color: #0000BB">CURLOPT_HEADER</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">curl_setopt</span><span style="color: #007700">(</span><span style="color: #0000BB">$ch2</span><span style="color: #007700">, </span><span style="color: #0000BB">CURLOPT_URL</span><span style="color: #007700">, </span><span style="color: #DD0000">"http://www.php.net/"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">curl_setopt</span><span style="color: #007700">(</span><span style="color: #0000BB">$ch2</span><span style="color: #007700">, </span><span style="color: #0000BB">CURLOPT_HEADER</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// 创建批处理cURL句柄<br /></span><span style="color: #0000BB">$mh </span><span style="color: #007700">= </span><span style="color: #0000BB">curl_multi_init</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">// 增加2个句柄<br /></span><span style="color: #0000BB">curl_multi_add_handle</span><span style="color: #007700">(</span><span style="color: #0000BB">$mh</span><span style="color: #007700">,</span><span style="color: #0000BB">$ch1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">curl_multi_add_handle</span><span style="color: #007700">(</span><span style="color: #0000BB">$mh</span><span style="color: #007700">,</span><span style="color: #0000BB">$ch2</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$active </span><span style="color: #007700">= </span><span style="color: #0000BB">null</span><span style="color: #007700">;<br /></span><span style="color: #FF8000">// 执行批处理句柄<br /></span><span style="color: #007700">do {<br /> </span><span style="color: #0000BB">$mrc </span><span style="color: #007700">= </span><span style="color: #0000BB">curl_multi_exec</span><span style="color: #007700">(</span><span style="color: #0000BB">$mh</span><span style="color: #007700">, </span><span style="color: #0000BB">$active</span><span style="color: #007700">);<br />} while (</span><span style="color: #0000BB">$mrc </span><span style="color: #007700">== </span><span style="color: #0000BB">CURLM_CALL_MULTI_PERFORM</span><span style="color: #007700">);<br /><br />while (</span><span style="color: #0000BB">$active </span><span style="color: #007700">&& </span><span style="color: #0000BB">$mrc </span><span style="color: #007700">== </span><span style="color: #0000BB">CURLM_OK</span><span style="color: #007700">) {<br /> if (</span><span style="color: #0000BB">curl_multi_select</span><span style="color: #007700">(</span><span style="color: #0000BB">$mh</span><span style="color: #007700">) != -</span><span style="color: #0000BB">1</span><span style="color: #007700">) {<br /> do {<br /> </span><span style="color: #0000BB">$mrc </span><span style="color: #007700">= </span><span style="color: #0000BB">curl_multi_exec</span><span style="color: #007700">(</span><span style="color: #0000BB">$mh</span><span style="color: #007700">, </span><span style="color: #0000BB">$active</span><span style="color: #007700">);<br /> } while (</span><span style="color: #0000BB">$mrc </span><span style="color: #007700">== </span><span style="color: #0000BB">CURLM_CALL_MULTI_PERFORM</span><span style="color: #007700">);<br /> }<br />}<br /><br /></span><span style="color: #FF8000">// 关闭全部句柄<br /></span><span style="color: #0000BB">curl_multi_remove_handle</span><span style="color: #007700">(</span><span style="color: #0000BB">$mh</span><span style="color: #007700">, </span><span style="color: #0000BB">$ch1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">curl_multi_remove_handle</span><span style="color: #007700">(</span><span style="color: #0000BB">$mh</span><span style="color: #007700">, </span><span style="color: #0000BB">$ch2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">curl_multi_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$mh</span><span style="color: #007700">);<br /><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.curl-multi-exec-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="curl_multi_init.html" class="function" rel="rdfs-seeAlso">curl_multi_init()</a> - 返回一个新cURL批处理句柄</span></li>
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<li class="member"><span class="function"><a href="curl_multi_select.html" class="function" rel="rdfs-seeAlso">curl_multi_select()</a> - 等待所有cURL批处理中的活动连接</span></li>
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<li class="member"><span class="function"><a href="curl_exec.html" class="function" rel="rdfs-seeAlso">curl_exec()</a> - 执行 cURL 会话</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> |