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95 lines
5.0 KiB
HTML
95 lines
5.0 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>返回已发送的 HTTP 响应头（或准备发送的）</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.headers-list" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">headers_list</h1>
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<p class="verinfo">(PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">headers_list</span> — <span class="dc-title">返回已发送的 HTTP 响应头（或准备发送的）</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.headers-list-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>headers_list</strong></span>
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( <span class="methodparam">void</span>
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) : <span class="type">array</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>headers_list()</strong></span> 会返回准备发送给浏览器/客户端的 HTTP 头列表。
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检测这些头是否已经发送，使用 <span class="function"><a href="headers_sent.html" class="function">headers_sent()</a></span>。
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.headers-list-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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返回数字索引的头数组。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.headers-list-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-5495">
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<p><strong>Example #1 使用 <span class="function"><strong>headers_list()</strong></span> 的例子</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 /><br /></span><span style="color: #FF8000">/* setcookie() 会自己添加一个响应头 */<br /></span><span style="color: #0000BB">setcookie</span><span style="color: #007700">(</span><span style="color: #DD0000">'foo'</span><span style="color: #007700">, </span><span style="color: #DD0000">'bar'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* 添加自定义的响应头<br /> 大多数客户端会主动忽略 */<br /></span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"X-Sample-Test: foo"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* 响应中指定内容为明文 text */<br /></span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">'Content-type: text/plain'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* 所以会发送什么头呢？ */<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">headers_list</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 class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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array(4) {
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[0]=>
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string(23) "X-Powered-By: PHP/5.1.3"
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[1]=>
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string(19) "Set-Cookie: foo=bar"
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[2]=>
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string(18) "X-Sample-Test: foo"
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[3]=>
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string(24) "Content-type: text/plain"
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}
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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.headers-list-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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数据头只会在SAPI支持时得到处理和输出。
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</p>
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</p></blockquote>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.headers-list-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="headers_sent.html" class="function" rel="rdfs-seeAlso">headers_sent()</a> - 检测 HTTP 头是否已经发送</span></li>
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<li class="member"><span class="function"><a href="header.html" class="function" rel="rdfs-seeAlso">header()</a> - 发送原生 HTTP 头</span></li>
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<li class="member"><span class="function"><a href="setcookie.html" class="function" rel="rdfs-seeAlso">setcookie()</a> - 发送 Cookie</span></li>
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<li class="member"><span class="function"><a href="apache_response_headers.html" class="function" rel="rdfs-seeAlso">apache_response_headers()</a> - 获得全部 HTTP 响应头信息</span></li>
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<li class="member"><span class="function"><a href="http_response_code.html" class="function" rel="rdfs-seeAlso">http_response_code()</a> - 获取/设置响应的 HTTP 状态码</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> |