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161 lines
7.8 KiB
HTML
161 lines
7.8 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>从文件指针中读取一行并过滤掉 HTML 标记</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.fgetss" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">fgetss</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">fgetss</span> — <span class="dc-title">从文件指针中读取一行并过滤掉 HTML 标记</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.fgetss-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>fgetss</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$handle</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$length</code></span>
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[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$allowable_tags</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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和 <span class="function"><a href="fgets.html" class="function">fgets()</a></span> 相同，只除了 <span class="function"><strong>fgetss()</strong></span> 尝试从读取的文本中去掉任何 HTML 和 PHP 标记。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.fgetss-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">handle</code></dt>
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<dd>
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<p class="para">文件指针必须是有效的，必须指向由
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<span class="function"><a href="fopen.html" class="function">fopen()</a></span> 或 <span class="function"><a href="fsockopen.html" class="function">fsockopen()</a></span> 成功打开的文件(并还未由 <span class="function"><a href="fclose.html" class="function">fclose()</a></span> 关闭)。</p>
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</dd>
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<dt>
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<code class="parameter">length</code></dt>
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<dd>
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<p class="para">
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取回该长度的数据。
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</p>
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</dd>
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<dt>
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<code class="parameter">allowable_tags</code></dt>
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<dd>
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<p class="para">
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可以用可选的第三个参数指定哪些标记不被去掉。
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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.fgetss-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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从 <code class="parameter">handle</code> 指向的文件中大读取 <code class="parameter">length</code> - 1 个字节的字符，并过滤了所有的 HTML 和 PHP 代码。
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</p>
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<p class="para">
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错误发生时返回 <strong><code>FALSE</code></strong>。
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.fgetss-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>5.0.0</td>
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<td>
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参数 <code class="parameter">length</code> 从 此开始可选。
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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.fgetss-examples">
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<p class="para">
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<div class="example" id="example-2776">
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<p><strong>Example #1 一行行读取一个 PHP 文件</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 />$str </span><span style="color: #007700">= <<<EOD<br /></span><span style="color: #DD0000"><html><body><br /> <p>Welcome! Today is the <?php echo(date('jS')); ?> of <?= date('F'); ?>.</p><br /></body></html><br />Text outside of the HTML block.<br /></span><span style="color: #007700">EOD;<br /></span><span style="color: #0000BB">file_put_contents</span><span style="color: #007700">(</span><span style="color: #DD0000">'sample.php'</span><span style="color: #007700">, </span><span style="color: #0000BB">$str</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$handle </span><span style="color: #007700">= @</span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #DD0000">"sample.php"</span><span style="color: #007700">, </span><span style="color: #DD0000">"r"</span><span style="color: #007700">);<br />if (</span><span style="color: #0000BB">$handle</span><span style="color: #007700">) {<br /> while (!</span><span style="color: #0000BB">feof</span><span style="color: #007700">(</span><span style="color: #0000BB">$handle</span><span style="color: #007700">)) {<br /> </span><span style="color: #0000BB">$buffer </span><span style="color: #007700">= </span><span style="color: #0000BB">fgetss</span><span style="color: #007700">(</span><span style="color: #0000BB">$handle</span><span style="color: #007700">, </span><span style="color: #0000BB">4096</span><span style="color: #007700">);<br /> echo </span><span style="color: #0000BB">$buffer</span><span style="color: #007700">;<br /> }<br /> </span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$handle</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>以上例程的输出类似于：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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Welcome! Today is the of .
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Text outside of the HTML block.
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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.fgetss-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">在读取在 Macintosh 电脑中或由其创建的文件时， 如果 PHP
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不能正确的识别行结束符，启用运行时配置可选项 <a href="filesystem.configuration.html#ini.auto-detect-line-endings" class="link">auto_detect_line_endings</a>
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也许可以解决此问题。</span></p></blockquote>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.fgetss-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="fgets.html" class="function" rel="rdfs-seeAlso">fgets()</a> - 从文件指针中读取一行</span></li>
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<li class="member"><span class="function"><a href="fopen.html" class="function" rel="rdfs-seeAlso">fopen()</a> - 打开文件或者 URL</span></li>
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<li class="member"><span class="function"><a href="popen.html" class="function" rel="rdfs-seeAlso">popen()</a> - 打开进程文件指针</span></li>
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<li class="member"><span class="function"><a href="fsockopen.html" class="function" rel="rdfs-seeAlso">fsockopen()</a> - 打开一个网络连接或者一个Unix套接字连接</span></li>
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<li class="member"><span class="function"><a href="strip_tags.html" class="function" rel="rdfs-seeAlso">strip_tags()</a> - 从字符串中去除 HTML 和 PHP 标记</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> |