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121 lines
5.8 KiB
HTML
121 lines
5.8 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>获取/设置响应的 HTTP 状态码</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.http-response-code" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">http_response_code</h1>
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<p class="verinfo">(PHP 5 >= 5.4.0, PHP 7)</p><p class="refpurpose"><span class="refname">http_response_code</span> — <span class="dc-title">获取/设置响应的 HTTP 状态码</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.http-response-code-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>http_response_code</strong></span>
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([ <span class="methodparam"><span class="type">int</span> <code class="parameter">$response_code</code></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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获取或者设置响应的 HTTP 状态码。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.http-response-code-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">response_code</code></dt>
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<dd>
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<p class="para">
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可选的 <code class="parameter">response_code</code> 会设置响应的状态码。
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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.http-response-code-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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如果提供了 <code class="parameter">response_code</code>，将返回先前的状态码。
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如果未提供 <code class="parameter">response_code</code>，会返回当前的状态码。
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在 Web 服务器环境里，这些状态码的默认值都是 <em>200</em>。
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</p>
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<p class="para">
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如果在非 Web 服务器环境里调用（比如 CLI 应用里），
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不提供 <code class="parameter">response_code</code> 就会返回 <strong><code>FALSE</code></strong> 。
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在非 Web 服务器环境里，提供 <code class="parameter">response_code</code> 会返回 <strong><code>TRUE</code></strong>
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（仅仅在先前没有设置过状态码的时候）。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.http-response-code-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-5497">
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<p><strong>Example #1 Web 服务器环境内使用 <span class="function"><strong>http_response_code()</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 /><br /></span><span style="color: #FF8000">// 获取当前状态码，并设置新的状态码<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">http_response_code</span><span style="color: #007700">(</span><span style="color: #0000BB">404</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">//获取新的状态码<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">http_response_code</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 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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int(200)
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int(404)
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</pre></div>
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</div>
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</div>
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<div class="example" id="example-5498">
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<p><strong>Example #2 在 CLI 环境内使用 <span class="function"><strong>http_response_code()</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 /><br /></span><span style="color: #FF8000">// 获取当前默认的响应状态码 <br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">http_response_code</span><span style="color: #007700">());<br /><br /></span><span style="color: #FF8000">// 设置状态码<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">http_response_code</span><span style="color: #007700">(</span><span style="color: #0000BB">201</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">// 获取新的状态码<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">http_response_code</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 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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bool(false)
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bool(true)
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int(201)
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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.http-response-code-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="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="headers_list.html" class="function" rel="rdfs-seeAlso">headers_list()</a> - 返回已发送的 HTTP 响应头（或准备发送的）</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> |