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328 lines
12 KiB
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<!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>获取一个cURL连接资源句柄的信息</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-getinfo" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">curl_getinfo</h1>
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<p class="verinfo">(PHP 4 >= 4.0.4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">curl_getinfo</span> — <span class="dc-title">获取一个cURL连接资源句柄的信息</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.curl-getinfo-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_getinfo</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$ch</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$opt</code><span class="initializer"> = 0</span></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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获取最后一次传输的相关信息。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.curl-getinfo-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">ch</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_init.html" class="function">curl_init()</a></span> 返回的 cURL 句柄。</p></dd>
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<dt>
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<code class="parameter">opt</code></dt>
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<dd>
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<p class="para">
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这个参数可能是以下常量之一:
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<ul class="itemizedlist">
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_EFFECTIVE_URL</code></strong> - 最后一个有效的URL地址
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_HTTP_CODE</code></strong> - 最后一个收到的HTTP代码
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_FILETIME</code></strong> - 远程获取文档的时间，如果无法获取，则返回值为“-1”
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_TOTAL_TIME</code></strong> - 最后一次传输所消耗的时间
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_NAMELOOKUP_TIME</code></strong> - 名称解析所消耗的时间
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_CONNECT_TIME</code></strong> - 建立连接所消耗的时间
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_PRETRANSFER_TIME</code></strong> - 从建立连接到准备传输所使用的时间
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_STARTTRANSFER_TIME</code></strong> - 从建立连接到传输开始所使用的时间
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_REDIRECT_TIME</code></strong> - 在事务传输开始前重定向所使用的时间
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_SIZE_UPLOAD</code></strong> - 以字节为单位返回上传数据量的总值
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_SIZE_DOWNLOAD</code></strong> - 以字节为单位返回下载数据量的总值
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_SPEED_DOWNLOAD</code></strong> - 平均下载速度
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_SPEED_UPLOAD</code></strong> - 平均上传速度
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_HEADER_SIZE</code></strong> - header部分的大小
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_HEADER_OUT</code></strong> - 发送请求的字符串
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_REQUEST_SIZE</code></strong> - 在HTTP请求中有问题的请求的大小
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_SSL_VERIFYRESULT</code></strong> - 通过设置<strong><code>CURLOPT_SSL_VERIFYPEER</code></strong>返回的SSL证书验证请求的结果
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_CONTENT_LENGTH_DOWNLOAD</code></strong> - 从<em>Content-Length:</em> field中读取的下载内容长度
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_CONTENT_LENGTH_UPLOAD</code></strong> - 上传内容大小的说明
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>CURLINFO_CONTENT_TYPE</code></strong> - 下载内容的<em>Content-Type:</em>值，NULL表示服务器没有发送有效的<em>Content-Type:</em> header
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</span>
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</li>
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</ul>
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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-getinfo-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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如果 <code class="parameter">opt</code> 被设置，以字符串形式返回它的值。否则，返回返回一个包含下列元素的关联数组(它们分别对应于 <code class="parameter">opt</code>):
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<ul class="itemizedlist">
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<li class="listitem">
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<span class="simpara">
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"url"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"content_type"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"http_code"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"header_size"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"request_size"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"filetime"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"ssl_verify_result"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"redirect_count"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"total_time"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"namelookup_time"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"connect_time"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"pretransfer_time"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"size_upload"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"size_download"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"speed_download"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"speed_upload"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"download_content_length"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"upload_content_length"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"starttransfer_time"
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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"redirect_time"
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</span>
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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 class="refsect1 changelog" id="refsect1-function.curl-getinfo-changelog">
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<h3 class="title">更新日志</h3>
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<p class="para">
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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>5.1.3</td>
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<td>
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引入<strong><code>CURLINFO_HEADER_OUT</code></strong>.
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</td>
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</tr>
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</tbody>
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</table>
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.curl-getinfo-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-5241">
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<p><strong>Example #1 <span class="function"><strong>curl_getinfo()</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 /></span><span style="color: #FF8000">// 创建一个cURL句柄<br /></span><span style="color: #0000BB">$ch </span><span style="color: #007700">= </span><span style="color: #0000BB">curl_init</span><span style="color: #007700">(</span><span style="color: #DD0000">'http://www.yahoo.com/'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// 执行<br /></span><span style="color: #0000BB">curl_exec</span><span style="color: #007700">(</span><span style="color: #0000BB">$ch</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// 检查是否有错误发生<br /></span><span style="color: #007700">if(!</span><span style="color: #0000BB">curl_errno</span><span style="color: #007700">(</span><span style="color: #0000BB">$ch</span><span style="color: #007700">))<br />{<br /> </span><span style="color: #0000BB">$info </span><span style="color: #007700">= </span><span style="color: #0000BB">curl_getinfo</span><span style="color: #007700">(</span><span style="color: #0000BB">$ch</span><span style="color: #007700">);<br /><br /> echo </span><span style="color: #DD0000">'Took ' </span><span style="color: #007700">. </span><span style="color: #0000BB">$info</span><span style="color: #007700">[</span><span style="color: #DD0000">'total_time'</span><span style="color: #007700">] . </span><span style="color: #DD0000">' seconds to send a request to ' </span><span style="color: #007700">. </span><span style="color: #0000BB">$info</span><span style="color: #007700">[</span><span style="color: #DD0000">'url'</span><span style="color: #007700">];<br />}<br /><br /></span><span style="color: #FF8000">// Close handle<br /></span><span style="color: #0000BB">curl_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$ch</span><span style="color: #007700">);<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.curl-getinfo-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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Information gathered by this function is kept if the handle is re-used. This means
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that unless a statistic is overridden internally by this function, the previous info
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is returned.
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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> |