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336<li class="toctree-l2"><a class="reference internal" href="uri.html">URI Class</a></li>
337<li class="toctree-l2 current"><a class="current reference internal" href="#">User Agent Class</a></li>
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359</ul>
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385</ul>
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388
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391 </div>
392 &nbsp;
393 </nav>
394
395 <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
396
397
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409 <li><a href="../index.html">Docs</a> &raquo;</li>
410
411 <li><a href="index.html">Libraries</a> &raquo;</li>
412
413 <li>User Agent Class</li>
414 <li class="wy-breadcrumbs-aside">
415
416 </li>
417 <div style="float:right;margin-left:5px;" id="closeMe">
418 <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" />
419 </div>
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423 <div role="main" class="document">
424
425 <div class="section" id="user-agent-class">
426<h1>User Agent Class<a class="headerlink" href="#user-agent-class" title="Permalink to this headline"></a></h1>
427<p>The User Agent Class provides functions that help identify information
428about the browser, mobile device, or robot visiting your site. In
429addition you can get referrer information as well as language and
430supported character-set information.</p>
431<div class="contents local topic" id="contents">
432<ul class="simple">
433<li><a class="reference internal" href="#using-the-user-agent-class" id="id1">Using the User Agent Class</a><ul>
434<li><a class="reference internal" href="#initializing-the-class" id="id2">Initializing the Class</a></li>
435<li><a class="reference internal" href="#user-agent-definitions" id="id3">User Agent Definitions</a></li>
436<li><a class="reference internal" href="#example" id="id4">Example</a></li>
437</ul>
438</li>
439<li><a class="reference internal" href="#class-reference" id="id5">Class Reference</a></li>
440</ul>
441</div>
442<div class="custom-index container"></div><div class="section" id="using-the-user-agent-class">
443<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>
444<div class="section" id="initializing-the-class">
445<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>
446<p>Like most other classes in CodeIgniter, the User Agent class is
447initialized in your controller using the $this-&gt;load-&gt;library function:</p>
448<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">library</span><span class="p">(</span><span class="s1">&#39;user_agent&#39;</span><span class="p">);</span>
449</pre></div>
450</div>
451<p>Once loaded, the object will be available using: <code class="docutils literal"><span class="pre">$this-&gt;agent</span></code></p>
452</div>
453<div class="section" id="user-agent-definitions">
454<h3><a class="toc-backref" href="#id3">User Agent Definitions</a><a class="headerlink" href="#user-agent-definitions" title="Permalink to this headline"></a></h3>
455<p>The user agent name definitions are located in a config file located at:
456application/config/user_agents.php. You may add items to the various
457user agent arrays if needed.</p>
458</div>
459<div class="section" id="example">
460<h3><a class="toc-backref" href="#id4">Example</a><a class="headerlink" href="#example" title="Permalink to this headline"></a></h3>
461<p>When the User Agent class is initialized it will attempt to determine
462whether the user agent browsing your site is a web browser, a mobile
463device, or a robot. It will also gather the platform information if it
464is available.</p>
465<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">library</span><span class="p">(</span><span class="s1">&#39;user_agent&#39;</span><span class="p">);</span>
466
467<span class="k">if</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">is_browser</span><span class="p">())</span>
468<span class="p">{</span>
469 <span class="nv">$agent</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">browser</span><span class="p">()</span><span class="o">.</span><span class="s1">&#39; &#39;</span><span class="o">.</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">version</span><span class="p">();</span>
470<span class="p">}</span>
471<span class="k">elseif</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">is_robot</span><span class="p">())</span>
472<span class="p">{</span>
473 <span class="nv">$agent</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">robot</span><span class="p">();</span>
474<span class="p">}</span>
475<span class="k">elseif</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">is_mobile</span><span class="p">())</span>
476<span class="p">{</span>
477 <span class="nv">$agent</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">mobile</span><span class="p">();</span>
478<span class="p">}</span>
479<span class="k">else</span>
480<span class="p">{</span>
481 <span class="nv">$agent</span> <span class="o">=</span> <span class="s1">&#39;Unidentified User Agent&#39;</span><span class="p">;</span>
482<span class="p">}</span>
483
484<span class="k">echo</span> <span class="nv">$agent</span><span class="p">;</span>
485
486<span class="k">echo</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">platform</span><span class="p">();</span> <span class="c1">// Platform info (Windows, Linux, Mac, etc.)</span>
487</pre></div>
488</div>
489</div>
490</div>
491<div class="section" id="class-reference">
492<h2><a class="toc-backref" href="#id5">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline"></a></h2>
493<dl class="class">
494<dt id="CI_User_agent">
495<em class="property">class </em><code class="descname">CI_User_agent</code><a class="headerlink" href="#CI_User_agent" title="Permalink to this definition"></a></dt>
496<dd><dl class="method">
497<dt id="CI_User_agent::is_browser">
498<code class="descname">is_browser</code><span class="sig-paren">(</span><span class="optional">[</span><em>$key = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::is_browser" title="Permalink to this definition"></a></dt>
499<dd><table class="docutils field-list" frame="void" rules="none">
500<col class="field-name" />
501<col class="field-body" />
502<tbody valign="top">
503<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
504<li><strong>$key</strong> (<em>string</em>) – Optional browser name</li>
505</ul>
506</td>
507</tr>
508<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE if the user agent is a (specified) browser, FALSE if not</p>
509</td>
510</tr>
511<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
512</td>
513</tr>
514</tbody>
515</table>
516<p>Returns TRUE/FALSE (boolean) if the user agent is a known web browser.</p>
517<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">is_browser</span><span class="p">(</span><span class="s1">&#39;Safari&#39;</span><span class="p">))</span>
518<span class="p">{</span>
519 <span class="k">echo</span> <span class="s1">&#39;You are using Safari.&#39;</span><span class="p">;</span>
520<span class="p">}</span>
521<span class="k">elseif</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">is_browser</span><span class="p">())</span>
522<span class="p">{</span>
523 <span class="k">echo</span> <span class="s1">&#39;You are using a browser.&#39;</span><span class="p">;</span>
524<span class="p">}</span>
525</pre></div>
526</div>
527<div class="admonition note">
528<p class="first admonition-title">Note</p>
529<p class="last">The string “Safari” in this example is an array key in the list of browser definitions.
530You can find this list in <strong>application/config/user_agents.php</strong> if you want to add new
531browsers or change the stings.</p>
532</div>
533</dd></dl>
534
535<dl class="method">
536<dt id="CI_User_agent::is_mobile">
537<code class="descname">is_mobile</code><span class="sig-paren">(</span><span class="optional">[</span><em>$key = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::is_mobile" title="Permalink to this definition"></a></dt>
538<dd><table class="docutils field-list" frame="void" rules="none">
539<col class="field-name" />
540<col class="field-body" />
541<tbody valign="top">
542<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
543<li><strong>$key</strong> (<em>string</em>) – Optional mobile device name</li>
544</ul>
545</td>
546</tr>
547<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE if the user agent is a (specified) mobile device, FALSE if not</p>
548</td>
549</tr>
550<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
551</td>
552</tr>
553</tbody>
554</table>
555<p>Returns TRUE/FALSE (boolean) if the user agent is a known mobile device.</p>
556<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">is_mobile</span><span class="p">(</span><span class="s1">&#39;iphone&#39;</span><span class="p">))</span>
557<span class="p">{</span>
558 <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;iphone/home&#39;</span><span class="p">);</span>
559<span class="p">}</span>
560<span class="k">elseif</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">is_mobile</span><span class="p">())</span>
561<span class="p">{</span>
562 <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;mobile/home&#39;</span><span class="p">);</span>
563<span class="p">}</span>
564<span class="k">else</span>
565<span class="p">{</span>
566 <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;web/home&#39;</span><span class="p">);</span>
567<span class="p">}</span>
568</pre></div>
569</div>
570</dd></dl>
571
572<dl class="method">
573<dt id="CI_User_agent::is_robot">
574<code class="descname">is_robot</code><span class="sig-paren">(</span><span class="optional">[</span><em>$key = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::is_robot" title="Permalink to this definition"></a></dt>
575<dd><table class="docutils field-list" frame="void" rules="none">
576<col class="field-name" />
577<col class="field-body" />
578<tbody valign="top">
579<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
580<li><strong>$key</strong> (<em>string</em>) – Optional robot name</li>
581</ul>
582</td>
583</tr>
584<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>
585</td>
586</tr>
587<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
588</td>
589</tr>
590</tbody>
591</table>
592<p>Returns TRUE/FALSE (boolean) if the user agent is a known robot.</p>
593<div class="admonition note">
594<p class="first admonition-title">Note</p>
595<p class="last">The user agent library only contains the most common robot definitions. It is not a complete list of bots.
596There are hundreds of them so searching for each one would not be very efficient. If you find that some bots
597that commonly visit your site are missing from the list you can add them to your
598<strong>application/config/user_agents.php</strong> file.</p>
599</div>
600</dd></dl>
601
602<dl class="method">
603<dt id="CI_User_agent::is_referral">
604<code class="descname">is_referral</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::is_referral" title="Permalink to this definition"></a></dt>
605<dd><table class="docutils field-list" frame="void" rules="none">
606<col class="field-name" />
607<col class="field-body" />
608<tbody valign="top">
609<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>
610</tr>
611<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">bool</td>
612</tr>
613</tbody>
614</table>
615<p>Returns TRUE/FALSE (boolean) if the user agent was referred from another site.</p>
616</dd></dl>
617
618<dl class="method">
619<dt id="CI_User_agent::browser">
620<code class="descname">browser</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::browser" title="Permalink to this definition"></a></dt>
621<dd><table class="docutils field-list" frame="void" rules="none">
622<col class="field-name" />
623<col class="field-body" />
624<tbody valign="top">
625<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Detected browser or an empty string</td>
626</tr>
627<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
628</tr>
629</tbody>
630</table>
631<p>Returns a string containing the name of the web browser viewing your site.</p>
632</dd></dl>
633
634<dl class="method">
635<dt id="CI_User_agent::version">
636<code class="descname">version</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::version" title="Permalink to this definition"></a></dt>
637<dd><table class="docutils field-list" frame="void" rules="none">
638<col class="field-name" />
639<col class="field-body" />
640<tbody valign="top">
641<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Detected browser version or an empty string</td>
642</tr>
643<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
644</tr>
645</tbody>
646</table>
647<p>Returns a string containing the version number of the web browser viewing your site.</p>
648</dd></dl>
649
650<dl class="method">
651<dt id="CI_User_agent::mobile">
652<code class="descname">mobile</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::mobile" title="Permalink to this definition"></a></dt>
653<dd><table class="docutils field-list" frame="void" rules="none">
654<col class="field-name" />
655<col class="field-body" />
656<tbody valign="top">
657<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Detected mobile device brand or an empty string</td>
658</tr>
659<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
660</tr>
661</tbody>
662</table>
663<p>Returns a string containing the name of the mobile device viewing your site.</p>
664</dd></dl>
665
666<dl class="method">
667<dt id="CI_User_agent::robot">
668<code class="descname">robot</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::robot" title="Permalink to this definition"></a></dt>
669<dd><table class="docutils field-list" frame="void" rules="none">
670<col class="field-name" />
671<col class="field-body" />
672<tbody valign="top">
673<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Detected robot name or an empty string</td>
674</tr>
675<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
676</tr>
677</tbody>
678</table>
679<p>Returns a string containing the name of the robot viewing your site.</p>
680</dd></dl>
681
682<dl class="method">
683<dt id="CI_User_agent::platform">
684<code class="descname">platform</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::platform" title="Permalink to this definition"></a></dt>
685<dd><table class="docutils field-list" frame="void" rules="none">
686<col class="field-name" />
687<col class="field-body" />
688<tbody valign="top">
689<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Detected operating system or an empty string</td>
690</tr>
691<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
692</tr>
693</tbody>
694</table>
695<p>Returns a string containing the platform viewing your site (Linux, Windows, OS X, etc.).</p>
696</dd></dl>
697
698<dl class="method">
699<dt id="CI_User_agent::referrer">
700<code class="descname">referrer</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::referrer" title="Permalink to this definition"></a></dt>
701<dd><table class="docutils field-list" frame="void" rules="none">
702<col class="field-name" />
703<col class="field-body" />
704<tbody valign="top">
705<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Detected referrer or an empty string</td>
706</tr>
707<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
708</tr>
709</tbody>
710</table>
711<p>The referrer, if the user agent was referred from another site. Typically you’ll test for this as follows:</p>
712<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">is_referral</span><span class="p">())</span>
713<span class="p">{</span>
714 <span class="k">echo</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">referrer</span><span class="p">();</span>
715<span class="p">}</span>
716</pre></div>
717</div>
718</dd></dl>
719
720<dl class="method">
721<dt id="CI_User_agent::agent_string">
722<code class="descname">agent_string</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::agent_string" title="Permalink to this definition"></a></dt>
723<dd><table class="docutils field-list" frame="void" rules="none">
724<col class="field-name" />
725<col class="field-body" />
726<tbody valign="top">
727<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Full user agent string or an empty string</td>
728</tr>
729<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td>
730</tr>
731</tbody>
732</table>
733<p>Returns a string containing the full user agent string. Typically it will be something like this:</p>
734<div class="highlight-ci"><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>
735</pre></div>
736</div>
737</dd></dl>
738
739<dl class="method">
740<dt id="CI_User_agent::accept_lang">
741<code class="descname">accept_lang</code><span class="sig-paren">(</span><span class="optional">[</span><em>$lang = 'en'</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::accept_lang" title="Permalink to this definition"></a></dt>
742<dd><table class="docutils field-list" frame="void" rules="none">
743<col class="field-name" />
744<col class="field-body" />
745<tbody valign="top">
746<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
747<li><strong>$lang</strong> (<em>string</em>) – Language key</li>
748</ul>
749</td>
750</tr>
751<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE if provided language is accepted, FALSE if not</p>
752</td>
753</tr>
754<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
755</td>
756</tr>
757</tbody>
758</table>
759<p>Lets you determine if the user agent accepts a particular language. Example:</p>
760<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">accept_lang</span><span class="p">(</span><span class="s1">&#39;en&#39;</span><span class="p">))</span>
761<span class="p">{</span>
762 <span class="k">echo</span> <span class="s1">&#39;You accept English!&#39;</span><span class="p">;</span>
763<span class="p">}</span>
764</pre></div>
765</div>
766<div class="admonition note">
767<p class="first admonition-title">Note</p>
768<p class="last">This method is not typically very reliable since some browsers do not provide language info,
769and even among those that do, it is not always accurate.</p>
770</div>
771</dd></dl>
772
773<dl class="method">
774<dt id="CI_User_agent::languages">
775<code class="descname">languages</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::languages" title="Permalink to this definition"></a></dt>
776<dd><table class="docutils field-list" frame="void" rules="none">
777<col class="field-name" />
778<col class="field-body" />
779<tbody valign="top">
780<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">An array list of accepted languages</td>
781</tr>
782<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">array</td>
783</tr>
784</tbody>
785</table>
786<p>Returns an array of languages supported by the user agent.</p>
787</dd></dl>
788
789<dl class="method">
790<dt id="CI_User_agent::accept_charset">
791<code class="descname">accept_charset</code><span class="sig-paren">(</span><span class="optional">[</span><em>$charset = 'utf-8'</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::accept_charset" title="Permalink to this definition"></a></dt>
792<dd><table class="docutils field-list" frame="void" rules="none">
793<col class="field-name" />
794<col class="field-body" />
795<tbody valign="top">
796<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
797<li><strong>$charset</strong> (<em>string</em>) – Character set</li>
798</ul>
799</td>
800</tr>
801<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE if the character set is accepted, FALSE if not</p>
802</td>
803</tr>
804<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
805</td>
806</tr>
807</tbody>
808</table>
809<p>Lets you determine if the user agent accepts a particular character set. Example:</p>
810<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">agent</span><span class="o">-&gt;</span><span class="na">accept_charset</span><span class="p">(</span><span class="s1">&#39;utf-8&#39;</span><span class="p">))</span>
811<span class="p">{</span>
812 <span class="k">echo</span> <span class="s1">&#39;You browser supports UTF-8!&#39;</span><span class="p">;</span>
813<span class="p">}</span>
814</pre></div>
815</div>
816<div class="admonition note">
817<p class="first admonition-title">Note</p>
818<p class="last">This method is not typically very reliable since some browsers do not provide character-set info,
819and even among those that do, it is not always accurate.</p>
820</div>
821</dd></dl>
822
823<dl class="method">
824<dt id="CI_User_agent::charsets">
825<code class="descname">charsets</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::charsets" title="Permalink to this definition"></a></dt>
826<dd><table class="docutils field-list" frame="void" rules="none">
827<col class="field-name" />
828<col class="field-body" />
829<tbody valign="top">
830<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">An array list of accepted character sets</td>
831</tr>
832<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">array</td>
833</tr>
834</tbody>
835</table>
836<p>Returns an array of character sets accepted by the user agent.</p>
837</dd></dl>
838
839<dl class="method">
840<dt id="CI_User_agent::parse">
841<code class="descname">parse</code><span class="sig-paren">(</span><em>$string</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_User_agent::parse" title="Permalink to this definition"></a></dt>
842<dd><table class="docutils field-list" frame="void" rules="none">
843<col class="field-name" />
844<col class="field-body" />
845<tbody valign="top">
846<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
847<li><strong>$string</strong> (<em>string</em>) – A custom user-agent string</li>
848</ul>
849</td>
850</tr>
851<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">void</p>
852</td>
853</tr>
854</tbody>
855</table>
856<p>Parses a custom user-agent string, different from the one reported by the current visitor.</p>
857</dd></dl>
858
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