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  <div class="section" id="user-agent-class">
<h1>User Agent Class<a class="headerlink" href="#user-agent-class" title="Permalink to this headline">¶</a></h1>
<p>The User Agent Class provides functions that help identify information
about the browser, mobile device, or robot visiting your site.</p>
<div class="contents local topic" id="contents">
<ul class="simple">
<li><a class="reference internal" href="#using-the-user-agent-class" id="id1">Using the User Agent Class</a><ul>
<li><a class="reference internal" href="#initializing-the-class" id="id2">Initializing the Class</a></li>
<li><a class="reference internal" href="#user-agent-definitions" id="id3">User Agent Definitions</a></li>
<li><a class="reference internal" href="#example" id="id4">Example</a></li>
</ul>
</li>
<li><a class="reference internal" href="#class-reference" id="id5">Class Reference</a></li>
</ul>
</div>
<div class="section" id="using-the-user-agent-class">
<h2><a class="toc-backref" href="#id1">Using the User Agent Class</a><a class="headerlink" href="#using-the-user-agent-class" title="Permalink to this headline">¶</a></h2>
<div class="section" id="initializing-the-class">
<h3><a class="toc-backref" href="#id2">Initializing the Class</a><a class="headerlink" href="#initializing-the-class" title="Permalink to this headline">¶</a></h3>
<p>The User Agent class is always available directly from the current <a class="reference internal" href="../incoming/incomingrequest.html"><span class="doc">IncomingRequest</span></a> instance.
By default, you will have a request instance in your controller that you can retrieve the
User Agent class from:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$agent</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">request</span><span class="o">-&gt;</span><span class="na">getUserAgent</span><span class="p">();</span>
</pre></div>
</div>
</div>
<div class="section" id="user-agent-definitions">
<h3><a class="toc-backref" href="#id3">User Agent Definitions</a><a class="headerlink" href="#user-agent-definitions" title="Permalink to this headline">¶</a></h3>
<p>The user agent name definitions are located in a config file located at:
<strong>app/Config/UserAgents.php</strong>. You may add items to the various
user agent arrays if needed.</p>
</div>
<div class="section" id="example">
<h3><a class="toc-backref" href="#id4">Example</a><a class="headerlink" href="#example" title="Permalink to this headline">¶</a></h3>
<p>When the User Agent class is initialized it will attempt to determine
whether the user agent browsing your site is a web browser, a mobile
device, or a robot. It will also gather the platform information if it
is available:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$agent</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">request</span><span class="o">-&gt;</span><span class="na">getUserAgent</span><span class="p">();</span>

<span class="k">if</span> <span class="p">(</span><span class="nv">$agent</span><span class="o">-&gt;</span><span class="na">isBrowser</span><span class="p">())</span>
<span class="p">{</span>
        <span class="nv">$currentAgent</span> <span class="o">=</span> <span class="nv">$agent</span><span class="o">-&gt;</span><span class="na">getBrowser</span><span class="p">()</span><span class="o">.</span><span class="s1">&#39; &#39;</span><span class="o">.</span><span class="nv">$agent</span><span class="o">-&gt;</span><span class="na">getVersion</span><span class="p">();</span>
<span class="p">}</span>
<span class="k">elseif</span> <span class="p">(</span><span class="nv">$agent</span><span class="o">-&gt;</span><span class="na">isRobot</span><span class="p">())</span>
<span class="p">{</span>
        <span class="nv">$currentAgent</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">robot</span><span class="p">();</span>
<span class="p">}</span>
<span class="k">elseif</span> <span class="p">(</span><span class="nv">$agent</span><span class="o">-&gt;</span><span class="na">isMobile</span><span class="p">())</span>
<span class="p">{</span>
        <span class="nv">$currentAgent</span> <span class="o">=</span> <span class="nv">$agent</span><span class="o">-&gt;</span><span class="na">getMobile</span><span class="p">();</span>
<span class="p">}</span>
<span class="k">else</span>
<span class="p">{</span>
        <span class="nv">$currentAgent</span> <span class="o">=</span> <span class="s1">&#39;Unidentified User Agent&#39;</span><span class="p">;</span>
<span class="p">}</span>

<span class="k">echo</span> <span class="nv">$currentAgent</span><span class="p">;</span>

<span class="k">echo</span> <span class="nv">$agent</span><span class="o">-&gt;</span><span class="na">getPlatform</span><span class="p">();</span> <span class="c1">// Platform info (Windows, Linux, Mac, etc.)</span>
</pre></div>
</div>
</div>
</div>
<div class="section" id="class-reference">
<h2><a class="toc-backref" href="#id5">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline">¶</a></h2>
<dl class="class">
<dt>
<code class="descname">CodeIgniter\HTTP\UserAgent</code></dt>
<dd><dl class="method">
<dt id="isBrowser">
<code class="descname">isBrowser</code><span class="sig-paren">(</span><span class="optional">[</span><em>$key = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#isBrowser" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>$key</strong> (<em>string</em>) – Optional browser name</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE if the user agent is a (specified) browser, FALSE if not</p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
</td>
</tr>
</tbody>
</table>
<p>Returns TRUE/FALSE (boolean) if the user agent is a known web browser.</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="p">(</span><span class="nv">$agent</span><span class="o">-&gt;</span><span class="na">isBrowser</span><span class="p">(</span><span class="s1">&#39;Safari&#39;</span><span class="p">))</span>
<span class="p">{</span>
        <span class="k">echo</span> <span class="s1">&#39;You are using Safari.&#39;</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">elseif</span> <span class="p">(</span><span class="nv">$agent</span><span class="o">-&gt;</span><span class="na">isBrowser</span><span class="p">())</span>
<span class="p">{</span>
        <span class="k">echo</span> <span class="s1">&#39;You are using a browser.&#39;</span><span class="p">;</span>
<span class="p">}</span>
</pre></div>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">The string “Safari” in this example is an array key in the list of browser definitions.
You can find this list in <strong>app/Config/UserAgents.php</strong> if you want to add new
browsers or change the strings.</p>
</div>
</dd></dl>

<dl class="method">
<dt id="isMobile">
<code class="descname">isMobile</code><span class="sig-paren">(</span><span class="optional">[</span><em>$key = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#isMobile" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>$key</strong> (<em>string</em>) – Optional mobile device name</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE if the user agent is a (specified) mobile device, FALSE if not</p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
</td>
</tr>
</tbody>
</table>
<p>Returns TRUE/FALSE (boolean) if the user agent is a known mobile device.</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="p">(</span><span class="nv">$agent</span><span class="o">-&gt;</span><span class="na">isMobile</span><span class="p">(</span><span class="s1">&#39;iphone&#39;</span><span class="p">))</span>
<span class="p">{</span>
        <span class="k">echo</span> <span class="nx">view</span><span class="p">(</span><span class="s1">&#39;iphone/home&#39;</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">elseif</span> <span class="p">(</span><span class="nv">$agent</span><span class="o">-&gt;</span><span class="na">isMobile</span><span class="p">())</span>
<span class="p">{</span>
        <span class="k">echo</span> <span class="nx">view</span><span class="p">(</span><span class="s1">&#39;mobile/home&#39;</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">else</span>
<span class="p">{</span>
        <span class="k">echo</span> <span class="nx">view</span><span class="p">(</span><span class="s1">&#39;web/home&#39;</span><span class="p">);</span>
<span class="p">}</span>
</pre></div>
</div>
</dd></dl>

<dl class="method">
<dt id="isRobot">
<code class="descname">isRobot</code><span class="sig-paren">(</span><span class="optional">[</span><em>$key = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#isRobot" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>$key</strong> (<em>string</em>) – Optional robot name</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE if the user agent is a (specified) robot, FALSE if not</p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
</td>
</tr>
</tbody>
</table>
<p>Returns TRUE/FALSE (boolean) if the user agent is a known robot.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">The user agent library only contains the most common robot definitions. It is not a complete list of bots.
There are hundreds of them so searching for each one would not be very efficient. If you find that some bots
that commonly visit your site are missing from the list you can add them to your
<strong>app/Config/UserAgents.php</strong> file.</p>
</div>
</dd></dl>

<dl class="method">
<dt id="isReferral">
<code class="descname">isReferral</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#isReferral" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">TRUE if the user agent is a referral, FALSE if not</td>
</tr>
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">bool</td>
</tr>
</tbody>
</table>
<p>Returns TRUE/FALSE (boolean) if the user agent was referred from another site.</p>
</dd></dl>

<dl class="method">
<dt id="getBrowser">
<code class="descname">getBrowser</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#getBrowser" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Detected browser or an empty string</td>
</tr>
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
</tr>
</tbody>
</table>
<p>Returns a string containing the name of the web browser viewing your site.</p>
</dd></dl>

<dl class="method">
<dt id="getVersion">
<code class="descname">getVersion</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#getVersion" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Detected browser version or an empty string</td>
</tr>
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
</tr>
</tbody>
</table>
<p>Returns a string containing the version number of the web browser viewing your site.</p>
</dd></dl>

<dl class="method">
<dt id="getMobile">
<code class="descname">getMobile</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#getMobile" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Detected mobile device brand or an empty string</td>
</tr>
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
</tr>
</tbody>
</table>
<p>Returns a string containing the name of the mobile device viewing your site.</p>
</dd></dl>

<dl class="method">
<dt id="getRobot">
<code class="descname">getRobot</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#getRobot" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Detected robot name or an empty string</td>
</tr>
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
</tr>
</tbody>
</table>
<p>Returns a string containing the name of the robot viewing your site.</p>
</dd></dl>

<dl class="method">
<dt id="getPlatform">
<code class="descname">getPlatform</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#getPlatform" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Detected operating system or an empty string</td>
</tr>
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
</tr>
</tbody>
</table>
<p>Returns a string containing the platform viewing your site (Linux, Windows, OS X, etc.).</p>
</dd></dl>

<dl class="method">
<dt id="getReferrer">
<code class="descname">getReferrer</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#getReferrer" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Detected referrer or an empty string</td>
</tr>
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
</tr>
</tbody>
</table>
<p>The referrer, if the user agent was referred from another site. Typically you’ll test for this as follows:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="p">(</span><span class="nv">$agent</span><span class="o">-&gt;</span><span class="na">isReferral</span><span class="p">())</span>
<span class="p">{</span>
        <span class="k">echo</span> <span class="nv">$agent</span><span class="o">-&gt;</span><span class="na">referrer</span><span class="p">();</span>
<span class="p">}</span>
</pre></div>
</div>
</dd></dl>

<dl class="method">
<dt id="getAgentString">
<code class="descname">getAgentString</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#getAgentString" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Full user agent string or an empty string</td>
</tr>
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
</tr>
</tbody>
</table>
<p>Returns a string containing the full user agent string. Typically it will be something like this:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nx">Mozilla</span><span class="o">/</span><span class="mf">5.0</span> <span class="p">(</span><span class="nx">Macintosh</span><span class="p">;</span> <span class="nx">U</span><span class="p">;</span> <span class="nx">Intel</span> <span class="nx">Mac</span> <span class="nx">OS</span> <span class="nx">X</span><span class="p">;</span> <span class="nx">en</span><span class="o">-</span><span class="nx">US</span><span class="p">;</span> <span class="nx">rv</span><span class="o">:</span><span class="mf">1.8</span><span class="o">.</span><span class="mf">0.4</span><span class="p">)</span> <span class="nx">Gecko</span><span class="o">/</span><span class="mi">20060613</span> <span class="nx">Camino</span><span class="o">/</span><span class="mf">1.0</span><span class="o">.</span><span class="mi">2</span>
</pre></div>
</div>
</dd></dl>

<dl class="method">
<dt id="parse">
<code class="descname">parse</code><span class="sig-paren">(</span><em>$string</em><span class="sig-paren">)</span><a class="headerlink" href="#parse" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>$string</strong> (<em>string</em>) – A custom user-agent string</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">void</p>
</td>
</tr>
</tbody>
</table>
<p>Parses a custom user-agent string, different from the one reported by the current visitor.</p>
</dd></dl>

</dd></dl>

</div>
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