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128 lines
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HTML
128 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>创建资源流上下文</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.stream-context-create" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">stream_context_create</h1>
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<p class="verinfo">(PHP 4 >= 4.3.0, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">stream_context_create</span> — <span class="dc-title">创建资源流上下文</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.stream-context-create-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>stream_context_create</strong></span>
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([ <span class="methodparam"><span class="type">array</span> <code class="parameter">$options</code></span>
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[, <span class="methodparam"><span class="type">array</span> <code class="parameter">$params</code></span>
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]] ) : <span class="type">resource</span></div>
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<p class="para rdfs-comment">
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创建并返回一个资源流上下文，该资源流中包含了 <code class="parameter">options</code> 中提前设定的所有参数的值。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.stream-context-create-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">options</code></dt>
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<dd>
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<p class="para">
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必须是一个二维关联数组，格式如下：<em>$arr['wrapper']['option'] = $value</em> 。
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</p>
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<p class="para">
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默认是一个空数组。
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</p>
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</dd>
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<dt>
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<code class="parameter">params</code></dt>
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<dd>
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<p class="para">
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必须是 <em>$arr['parameter'] = $value</em> 格式的关联数组。
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请参考 <a href="context.html" class="link">context parameters</a> 里的标准资源流参数列表。
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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.stream-context-create-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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上下文资源流，类型为 <span class="type"><a href="language.types.resource.html" class="type resource">resource</a></span> 。
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.stream-context-create-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>5.3.0</td>
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<td>
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增加了可选参数 <code class="parameter">params</code> 。
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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.stream-context-create-examples">
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<h3 class="title">范例</h3>
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<div class="example" id="example-4813">
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<p><strong>Example #1 使用 <span class="function"><strong>stream_context_create()</strong></span></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 />$opts </span><span style="color: #007700">= array(<br /> </span><span style="color: #DD0000">'http'</span><span style="color: #007700">=>array(<br /> </span><span style="color: #DD0000">'method'</span><span style="color: #007700">=></span><span style="color: #DD0000">"GET"</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'header'</span><span style="color: #007700">=></span><span style="color: #DD0000">"Accept-language: en\r\n" </span><span style="color: #007700">.<br /> </span><span style="color: #DD0000">"Cookie: foo=bar\r\n"<br /> </span><span style="color: #007700">)<br />);<br /><br /></span><span style="color: #0000BB">$context </span><span style="color: #007700">= </span><span style="color: #0000BB">stream_context_create</span><span style="color: #007700">(</span><span style="color: #0000BB">$opts</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Sends an http request to www.example.com<br /> with additional headers shown above */<br /></span><span style="color: #0000BB">$fp </span><span style="color: #007700">= </span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #DD0000">'http://www.example.com'</span><span style="color: #007700">, </span><span style="color: #DD0000">'r'</span><span style="color: #007700">, </span><span style="color: #0000BB">false</span><span style="color: #007700">, </span><span style="color: #0000BB">$context</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fpassthru</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</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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</div>
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<div class="refsect1 seealso" id="refsect1-function.stream-context-create-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="stream_context_set_option.html" class="function" rel="rdfs-seeAlso">stream_context_set_option()</a> - 对资源流、数据包或者上下文设置参数</span></li>
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<li class="member">Listing of supported wrappers (<a href="wrappers.html" class="xref">支持的协议和封装协议</a>)</li>
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<li class="member">Context options (<a href="context.html" class="xref">上下文（Context）选项和参数</a>)</li>
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</ul>
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</div>
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</div></div></div></body></html> |