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165 lines
5.5 KiB
HTML
165 lines
5.5 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>在输出缓冲中转换字符编码的回调函数</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.mb-output-handler" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">mb_output_handler</h1>
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<p class="verinfo">(PHP 4 >= 4.0.6, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">mb_output_handler</span> — <span class="dc-title">在输出缓冲中转换字符编码的回调函数</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.mb-output-handler-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>mb_output_handler</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$contents</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$status</code></span>
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) : <span class="type">string</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>mb_output_handler()</strong></span> 是一个
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<span class="function"><a href="ob_start.html" class="function">ob_start()</a></span> 回调函数。
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<span class="function"><strong>mb_output_handler()</strong></span> 将输出缓冲中的字符从内部字符编码转换为 HTTP 输出的字符编码。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.mb-output-handler-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">contents</code></dt>
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<dd>
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<p class="para">
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输出缓冲的内容。
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</p>
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</dd>
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<dt>
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<code class="parameter">status</code></dt>
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<dd>
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<p class="para">
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输出缓冲的状态。
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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.mb-output-handler-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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转换后的 <span class="type"><a href="language.types.string.html" class="type string">string</a></span>。
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.mb-output-handler-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>4.1.0</td>
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<td>
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<p class="para">
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当遇到以下条件的时候，该函数将添加 HTTP 字符编码头：
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</p>
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<p class="para">
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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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未使用 <span class="function"><a href="header.html" class="function">header()</a></span> 设置 <em>Content-Type</em>。
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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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默认 MIME 类型以 <em>text/</em> 开始。
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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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<a href="mbstring.configuration.html#ini.mbstring.http-input" class="link">mbstring.http_input</a> 是除 <em>pass</em> 外的任意设置。
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</span>
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</li>
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</ul>
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</p>
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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.mb-output-handler-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-3190">
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<p><strong>Example #1 <span class="function"><strong>mb_output_handler()</strong></span> 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 />mb_http_output</span><span style="color: #007700">(</span><span style="color: #DD0000">"UTF-8"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">ob_start</span><span style="color: #007700">(</span><span style="color: #DD0000">"mb_output_handler"</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.mb-output-handler-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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如果你想要输出二进制数据，比如图片，必须在任何二进制数据发送到客户端之前使用 <span class="function"><a href="header.html" class="function">header()</a></span> 来设置 Content-Type: 头。（例如 header("Content-Type: image/png")）。
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如果 Content-Type: 头已发送，输出字符编码的转换将不会执行。
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</p>
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<p class="para">
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注意，如果发送了 'Content-Type: text/*'，则内容被认为是文本，将发生转换。
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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.mb-output-handler-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="ob_start.html" class="function" rel="rdfs-seeAlso">ob_start()</a> - 打开输出控制缓冲</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> |