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148 lines
6.4 KiB
HTML
148 lines
6.4 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>获取浏览器具有的功能</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.get-browser" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">get_browser</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">get_browser</span> — <span class="dc-title">获取浏览器具有的功能</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.get-browser-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>get_browser</strong></span>
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([ <span class="methodparam"><span class="type">string</span> <code class="parameter">$user_agent</code></span>
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[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$return_array</code><span class="initializer"> = false</span></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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通过查找 <var class="filename">browscap.ini</var> 文件中的浏览器信息，尝试检测用户的浏览器所具有的功能。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.get-browser-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">user_agent</code></dt>
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<dd>
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<p class="para">
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要分析的用户代理。默认使用HTTP头中User-Agent的值，不过，你可以通过传递该参数改变User-Agent。(比如查找另一个浏览器的信息)
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</p>
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<p class="para">
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你可以传递一个 <strong><code>NULL</code></strong> 来忽略该参数。
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</p>
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</dd>
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<dt>
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<code class="parameter">return_array</code></dt>
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<dd>
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<p class="para">
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如果设置为 <strong><code>TRUE</code></strong>，该函数会返回一个 <span class="type"><a href="language.types.array.html" class="type array">array</a></span>，而不是 <span class="type"><a href="language.types.object.html" class="type object">object</a></span>。
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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.get-browser-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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信息会以包含一系列数据的数组或者对象返回。例如：浏览器的主版本号、次版本号和ID字符串；框架、JavaScript、cookies等功能是否支持 <strong><code>TRUE</code></strong>/<strong><code>FALSE</code></strong> 的值。
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</p>
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<p class="para">
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<em>cookies</em> 的值仅意味着浏览器是否具有接收cookies的功能，不代表用户是否已允许启用cookies。
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测试的唯一办法，只有通过 <span class="function"><a href="setcookie.html" class="function">setcookie()</a></span> 设置一个cookie，刷新页面并检测该cookie的值。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.get-browser-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-4538">
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<p><strong>Example #1 列出所有用户浏览器的信息</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 /></span><span style="color: #007700">echo </span><span style="color: #0000BB">$_SERVER</span><span style="color: #007700">[</span><span style="color: #DD0000">'HTTP_USER_AGENT'</span><span style="color: #007700">] . </span><span style="color: #DD0000">"\n\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$browser </span><span style="color: #007700">= </span><span style="color: #0000BB">get_browser</span><span style="color: #007700">(</span><span style="color: #0000BB">null</span><span style="color: #007700">, </span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$browser</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程的输出类似于：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040803 Firefox/0.9.3
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Array
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(
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[browser_name_regex] => ^mozilla/5\.0 (windows; .; windows nt 5\.1; .*rv:.*) gecko/.* firefox/0\.9.*$
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[browser_name_pattern] => Mozilla/5.0 (Windows; ?; Windows NT 5.1; *rv:*) Gecko/* Firefox/0.9*
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[parent] => Firefox 0.9
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[platform] => WinXP
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[browser] => Firefox
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[version] => 0.9
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[majorver] => 0
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[minorver] => 9
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[cssversion] => 2
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[frames] => 1
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[iframes] => 1
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[tables] => 1
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[cookies] => 1
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[backgroundsounds] =>
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[vbscript] =>
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[javascript] => 1
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[javaapplets] => 1
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[activexcontrols] =>
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[cdf] =>
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[aol] =>
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[beta] => 1
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[win16] =>
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[crawler] =>
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[stripper] =>
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[wap] =>
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[netclr] =>
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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.get-browser-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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为了能让该函数运作，在 <var class="filename">php.ini</var> 中配置的 <a href="misc.configuration.html#ini.browscap" class="link">browscap</a> 必须指向 <var class="filename">browscap.ini</var> 文件的正确位置。
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</p>
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<p class="para">
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<var class="filename">browscap.ini</var> 并未内置在PHP中，不过你可以在这里找到最新的 <a href="http://browscap.org/" class="link external">» php_browscap.ini</a>。
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</p>
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<p class="para">
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<var class="filename">browscap.ini</var> 包含的诸多浏览器信息依赖于用户更新该数据库。该文件的格式不言自明。
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</p>
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</p></blockquote>
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</div>
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</div></div></div></body></html> |