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  <div class="section" id="upgrading-from-1-4-1-to-1-5-0">
<h1>Upgrading from 1.4.1 to 1.5.0<a class="headerlink" href="#upgrading-from-1-4-1-to-1-5-0" 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
1.4.1. 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 these files and directories in your “system” folder with the new
versions:</p>
<ul class="simple">
<li>application/config/user_agents.php (new file for 1.5)</li>
<li>application/config/smileys.php (new file for 1.5)</li>
<li>codeigniter/</li>
<li>database/ (new folder for 1.5. Replaces the “drivers” folder)</li>
<li>helpers/</li>
<li>language/</li>
<li>libraries/</li>
<li>scaffolding/</li>
</ul>
<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>
</div>
<div class="section" id="step-2-update-your-database-php-file">
<h2>Step 2: Update your database.php file<a class="headerlink" href="#step-2-update-your-database-php-file" title="Permalink to this headline">¶</a></h2>
<p>Open your application/config/database.php file and add these new items:</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$db</span><span class="p">[</span><span class="s1">&#39;default&#39;</span><span class="p">][</span><span class="s1">&#39;cache_on&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="k">FALSE</span><span class="p">;</span>
<span class="nv">$db</span><span class="p">[</span><span class="s1">&#39;default&#39;</span><span class="p">][</span><span class="s1">&#39;cachedir&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;&#39;</span><span class="p">;</span>
</pre></div>
</div>
</div>
<div class="section" id="step-3-update-your-config-php-file">
<h2>Step 3: Update your config.php file<a class="headerlink" href="#step-3-update-your-config-php-file" title="Permalink to this headline">¶</a></h2>
<p>Open your application/config/config.php file and ADD these new items:</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="cm">/*</span>
<span class="cm">|--------------------------------------------------------------------------</span>
<span class="cm">| Class Extension Prefix</span>
<span class="cm">|--------------------------------------------------------------------------</span>
<span class="cm">|</span>
<span class="cm">| This item allows you to set the filename/classname prefix when extending</span>
<span class="cm">| native libraries.  For more information please see the user guide:</span>
<span class="cm">|</span>
<span class="cm">| https://codeigniter.com/user_guide/general/core_classes.html</span>
<span class="cm">| https://codeigniter.com/user_guide/general/creating_libraries.html</span>
<span class="cm">|</span>
<span class="cm">*/</span>
<span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;subclass_prefix&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;MY_&#39;</span><span class="p">;</span>

<span class="cm">/*</span>
<span class="cm">|--------------------------------------------------------------------------</span>
<span class="cm">| Rewrite PHP Short Tags</span>
<span class="cm">|--------------------------------------------------------------------------</span>
<span class="cm">|</span>
<span class="cm">| If your PHP installation does not have short tag support enabled CI</span>
<span class="cm">| can rewrite the tags on-the-fly, enabling you to utilize that syntax</span>
<span class="cm">| in your view files.  Options are TRUE or FALSE (boolean)</span>
<span class="cm">|</span>
<span class="cm">*/</span>
<span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;rewrite_short_tags&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="k">FALSE</span><span class="p">;</span>
</pre></div>
</div>
<p>In that same file REMOVE this item:</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="cm">/*</span>
<span class="cm">|--------------------------------------------------------------------------</span>
<span class="cm">| Enable/Disable Error Logging</span>
<span class="cm">|--------------------------------------------------------------------------</span>
<span class="cm">|</span>
<span class="cm">| If you would like errors or debug messages logged set this variable to</span>
<span class="cm">| TRUE (boolean).  Note: You must set the file permissions on the &quot;logs&quot; folder</span>
<span class="cm">| such that it is writable.</span>
<span class="cm">|</span>
<span class="cm">*/</span>
<span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;log_errors&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="k">FALSE</span><span class="p">;</span>
</pre></div>
</div>
<p>Error logging is now disabled simply by setting the threshold to zero.</p>
</div>
<div class="section" id="step-4-update-your-main-index-php-file">
<h2>Step 4: Update your main index.php file<a class="headerlink" href="#step-4-update-your-main-index-php-file" title="Permalink to this headline">¶</a></h2>
<p>If you are running a stock index.php file simply replace your version
with the new one.</p>
<p>If your index.php file has internal modifications, please add your
modifications to the new file and use it.</p>
</div>
<div class="section" id="step-5-update-your-user-guide">
<h2>Step 5: Update your user guide<a class="headerlink" href="#step-5-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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