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<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li>
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<h1>Installation Instructions<a class="headerlink" href="#installation-instructions" title="Permalink to this headline"></a></h1>
<p>CodeIgniter is installed in four steps:</p>
<ol class="arabic simple">
<li>Unzip the package.</li>
<li>Upload the CodeIgniter folders and files to your server. Normally the
<em>index.php</em> file will be at your root.</li>
<li>Open the <em>application/config/config.php</em> file with a text editor and
set your base URL. If you intend to use encryption or sessions, set
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<li>If you intend to use a database, open the
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<p>If you wish to increase security by hiding the location of your
CodeIgniter files you can rename the system and application folders to
something more private. If you do rename them, you must open your main
<em>index.php</em> file and set the <code class="docutils literal"><span class="pre">$system_path</span></code> and <code class="docutils literal"><span class="pre">$application_folder</span></code>
variables at the top of the file with the new name youve chosen.</p>
<p>For the best security, both the system and any application folders
should be placed above web root so that they are not directly accessible
via a browser. By default, <em>.htaccess</em> files are included in each folder
to help prevent direct access, but it is best to remove them from public
access entirely in case the web server configuration changes or doesnt
abide by the <em>.htaccess</em>.</p>
<p>If you would like to keep your views public it is also possible to move
the views folder out of your application folder.</p>
<p>After moving them, open your main index.php file and set the
<code class="docutils literal"><span class="pre">$system_path</span></code>, <code class="docutils literal"><span class="pre">$application_folder</span></code> and <code class="docutils literal"><span class="pre">$view_folder</span></code> variables,
preferably with a full path, e.g. <em>/www/MyUser/system</em>.</p>
<p>One additional measure to take in production environments is to disable
PHP error reporting and any other development-only functionality. In
CodeIgniter, this can be done by setting the <code class="docutils literal"><span class="pre">ENVIRONMENT</span></code> constant, which
is more fully described on the <a class="reference internal" href="../general/security.html"><span class="doc">security
page</span></a>.</p>
<p>Thats it!</p>
<p>If youre new to CodeIgniter, please read the <a class="reference internal" href="../overview/getting_started.html"><span class="doc">Getting
Started</span></a> section of the User Guide
to begin learning how to build dynamic PHP applications. Enjoy!</p>
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