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<li class="toctree-l2"><a class="reference internal" href="../libraries/unit_testing.html">Unit Testing Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="../libraries/uri.html">URI Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li>
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  <div class="section" id="upgrading-from-1-4-0-to-1-4-1">
<h1>Upgrading from 1.4.0 to 1.4.1<a class="headerlink" href="#upgrading-from-1-4-0-to-1-4-1" title="Permalink to this headline">¶</a></h1>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">The instructions on this page assume you are running version
1.4.0. If you have not upgraded to that version please do so first.</p>
</div>
<p>Before performing an update you should take your site offline by
replacing the index.php file with a static one.</p>
<div class="section" id="step-1-update-your-codeigniter-files">
<h2>Step 1: Update your CodeIgniter files<a class="headerlink" href="#step-1-update-your-codeigniter-files" title="Permalink to this headline">¶</a></h2>
<p>Replace the following directories in your “system” folder with the new
versions:</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">If you have any custom developed files in these folders please
make copies of them first.</p>
</div>
<ul class="simple">
<li>codeigniter</li>
<li>drivers</li>
<li>helpers</li>
<li>libraries</li>
</ul>
</div>
<div class="section" id="step-2-update-your-config-php-file">
<h2>Step 2: Update your config.php file<a class="headerlink" href="#step-2-update-your-config-php-file" title="Permalink to this headline">¶</a></h2>
<p>Open your application/config/config.php file and add this new item:</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="cm">/*</span>
<span class="cm">|--------------------------------------------------------------------------</span>
<span class="cm">| Output Compression</span>
<span class="cm">|--------------------------------------------------------------------------</span>
<span class="cm">|</span>
<span class="cm">| Enables Gzip output compression for faster page loads.  When enabled,</span>
<span class="cm">| the output class will test whether your server supports Gzip.</span>
<span class="cm">| Even if it does, however, not all browsers support compression</span>
<span class="cm">| so enable only if you are reasonably sure your visitors can handle it.</span>
<span class="cm">|</span>
<span class="cm">| VERY IMPORTANT:  If you are getting a blank page when compression is enabled it</span>
<span class="cm">| means you are prematurely outputting something to your browser. It could</span>
<span class="cm">| even be a line of whitespace at the end of one of your scripts.  For</span>
<span class="cm">| compression to work, nothing can be sent before the output buffer is called</span>
<span class="cm">| by the output class.  Do not &quot;echo&quot; any values with compression enabled.</span>
<span class="cm">|</span>
<span class="cm">*/</span>
<span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;compress_output&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="k">FALSE</span><span class="p">;</span>
</pre></div>
</div>
</div>
<div class="section" id="step-3-rename-an-autoload-item">
<h2>Step 3: Rename an Autoload Item<a class="headerlink" href="#step-3-rename-an-autoload-item" title="Permalink to this headline">¶</a></h2>
<p>Open the following file: application/config/autoload.php</p>
<p>Find this array item:</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$autoload</span><span class="p">[</span><span class="s1">&#39;core&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="k">array</span><span class="p">();</span>
</pre></div>
</div>
<p>And rename it to this:</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$autoload</span><span class="p">[</span><span class="s1">&#39;libraries&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="k">array</span><span class="p">();</span>
</pre></div>
</div>
<p>This change was made to improve clarity since some users were not sure
that their own libraries could be auto-loaded.</p>
</div>
<div class="section" id="step-4-update-your-user-guide">
<h2>Step 4: Update your user guide<a class="headerlink" href="#step-4-update-your-user-guide" title="Permalink to this headline">¶</a></h2>
<p>Please also replace your local copy of the user guide with the new
version.</p>
</div>
</div>

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