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-<a href="http://codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;
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-User Agent Class
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-<h1>User Agent Class</h1>
-
-<p>The User Agent Class provides functions that help identify information about the browser, mobile device, or robot visiting your site.
-In addition you can get referrer information as well as language and supported character-set information.</p>
-
-<h2>Initializing the Class</h2>
-
-<p>Like most other classes in CodeIgniter, the User Agent class is initialized in your controller using the <dfn>$this->load->library</dfn> function:</p>
-
-<code>$this->load->library('user_agent');</code>
-<p>Once loaded, the object will be available using: <dfn>$this->agent</dfn></p>
-
-<h2>User Agent Definitions</h2>
-
-<p>The user agent name definitions are located in a config file located at: <dfn>application/config/user_agents.php</dfn>. You may add items to the
-various user agent arrays if needed.</p>
-
-<h2>Example</h2>
-
-<p>When the User Agent class is initialized it will attempt to determine whether the user agent browsing your site is
-a web browser, a mobile device, or a robot. It will also gather the platform information if it is available.</p>
-
-
-<code>
-$this->load->library('user_agent');<br />
-<br />
-if ($this->agent->is_browser())<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;$agent = $this->agent->browser().' '.$this->agent->version();<br />
-}<br />
-elseif ($this->agent->is_robot())<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;$agent = $this->agent->robot();<br />
-}<br />
-elseif ($this->agent->is_mobile())<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;$agent = $this->agent->mobile();<br />
-}<br />
-else<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;$agent = 'Unidentified User Agent';<br />
-}<br />
-<br />
-echo $agent;<br />
-<br />
-echo $this->agent->platform(); // Platform info (Windows, Linux, Mac, etc.)
-</code>
-
-
-<h1>Function Reference</h1>
-
-
-<h2>$this->agent->is_browser()</h2>
-<p>Returns TRUE/FALSE (boolean) if the user agent is a known web browser.</p>
-
-<code> if ($this->agent->is_browser('Safari'))<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;echo 'You are using Safari.';<br />
-}<br />
-else if ($this->agent->is_browser())<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;echo 'You are using a browser.';<br />
-}</code>
-
-<p class="important"><strong>Note:</strong>&nbsp; The string "Safari" in this example is an array key in the list of browser definitions.
-You can find this list in <dfn>application/config/user_agents.php</dfn> if you want to add new browsers or change the stings.</p>
-
-<h2>$this->agent->is_mobile()</h2>
-<p>Returns TRUE/FALSE (boolean) if the user agent is a known mobile device.</p>
-
-<code> if ($this->agent->is_mobile('iphone'))<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;$this->load->view('iphone/home');<br />
-}<br />
-else if ($this->agent->is_mobile())<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;$this->load->view('mobile/home');<br />
-}<br />
-else<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;$this->load->view('web/home');<br />
-}</code>
-
-<h2>$this->agent->is_robot()</h2>
-<p>Returns TRUE/FALSE (boolean) if the user agent is a known robot.</p>
-
-<p class="important"><strong>Note:</strong>&nbsp; The user agent library only contains the most common robot
-definitions. It is not a complete list of bots. There are hundreds of them so searching for each one would not be
-very efficient. If you find that some bots that commonly visit your site are missing from the list you can add them to your
-<dfn>application/config/user_agents.php</dfn> file.</p>
-
-<h2>$this->agent->is_referral()</h2>
-<p>Returns TRUE/FALSE (boolean) if the user agent was referred from another site.</p>
-
-
-<h2>$this->agent->browser()</h2>
-<p>Returns a string containing the name of the web browser viewing your site.</p>
-
-<h2>$this->agent->version()</h2>
-<p>Returns a string containing the version number of the web browser viewing your site.</p>
-
-<h2>$this->agent->mobile()</h2>
-<p>Returns a string containing the name of the mobile device viewing your site.</p>
-
-<h2>$this->agent->robot()</h2>
-<p>Returns a string containing the name of the robot viewing your site.</p>
-
-<h2>$this->agent->platform()</h2>
-<p>Returns a string containing the platform viewing your site (Linux, Windows, OS X, etc.).</p>
-
-<h2>$this->agent->referrer()</h2>
-<p>The referrer, if the user agent was referred from another site. Typically you'll test for this as follows:</p>
-
-<code> if ($this->agent->is_referral())<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;echo $this->agent->referrer();<br />
-}</code>
-
-
-<h2>$this->agent->agent_string()</h2>
-<p>Returns a string containing the full user agent string. Typically it will be something like this:</p>
-
-<code>Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-US; rv:1.8.0.4) Gecko/20060613 Camino/1.0.2</code>
-
-
-<h2>$this->agent->accept_lang()</h2>
-<p>Lets you determine if the user agent accepts a particular language. Example:</p>
-
-<code>if ($this->agent->accept_lang('en'))<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;echo 'You accept English!';<br />
-}</code>
-
-<p class="important"><strong>Note:</strong> This function is not typically very reliable
-since some browsers do not provide language info, and even among those that do, it is not always accurate. </p>
-
-
-
-<h2>$this->agent->accept_charset()</h2>
-<p>Lets you determine if the user agent accepts a particular character set. Example:</p>
-
-<code>if ($this->agent->accept_charset('utf-8'))<br />
-{<br />
-&nbsp;&nbsp;&nbsp;&nbsp;echo 'You browser supports UTF-8!';<br />
-}</code>
-
-<p class="important"><strong>Note:</strong> This function is not typically very reliable
-since some browsers do not provide character-set info, and even among those that do, it is not always accurate. </p>
-
-
-
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