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    <div class="topbar-hd"><h1>CodeIgniter 用户指南 版本 2.2.0</h1></div>
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<h1>从 1.5.4 升级到 1.6.0</h1>

<p>升级之前你需要断开网络，这样才能用静态文件index.php替换你原来的文件.</p>


<h2>第一步: 更新你的CodeIgniter文件</h2>

<p>在你的"system"目录下，用新版本的文件替换你原来的文件夹和文件:</p>

<ul>

<li><dfn>system/codeigniter</dfn></li>
<li><dfn>system/database</dfn></li>
<li><dfn>system/helpers</dfn></li>
<li><dfn>system/libraries</dfn></li>
<li><dfn>system/plugins</dfn></li>
<li><dfn>system/language</dfn></li>
</ul>

<p class="important"><strong>Note:</strong>如果在这个目录下有你自定义的文件，需要在更新之前做一下备份.</p>

<h2>第二步:在你的配置文件config.php中添加time_to_update</h2>
<p>使用其他的session配置变量添加如下内容到system/application/config/config.php文件中</p>
<p><code>$config['sess_time_to_update']   = 300;</code></p>

<h2>第三步: 添加 $autoload['model']</h2>
<p>添加如下内容到 system/application/config/autoload.php</p>
<p><code> /*<br />
    | -------------------------------------------------------------------<br />
    |  Auto-load Model files<br />
    | -------------------------------------------------------------------<br />
    | Prototype:<br />
    |<br />
    |  $autoload['model'] = array('my_model');<br />
    |<br />
    */<br />
    <br />
    $autoload['model'] = array();</code></p>

<h2>第四步: 修改你的数据库配置文件database.php </h2>
<p>把下面的变化添加到system/application/config/database.php这个文件中:</p>
<p>在数据库配置选项的最上面添加变量<dfn>$active_group</dfn></p>

<p><code>$active_record = TRUE;</code></p>
<p>删除如下数据库配置选项:</p>
<p><code>$db['default']['active_r'] = TRUE;</code></p>
<p>在你的配置文件database.php中添加下列内容：</p>
<p><code>$db['default']['char_set'] = &quot;utf8&quot;;<br />
$db['default']['dbcollat'] = &quot;utf8_general_ci&quot;;</code></p>

<h2>第五步: 更新你的用户参考手册</h2>
<p>直接用新版本的替换旧版本即可.</p><p>&nbsp;</p>
<div id="Contributors">
翻译贡献者:
Hex, zhupeng</div>
<div id="DocDate">
最后修改: 2009-09-12 15:22:35</div>
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