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codeigniter_user_guide_chs


			
				
					
						
						
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    <div class="topbar-hd"><h1>CodeIgniter 用户指南 版本 2.2.0</h1></div>
<div class="topbar-tip">编辑文档、查看近期更改请 <a href="#">登录</a> 或 <a href="#">注册</a> 　<a href="#">找回密码</a></div>      <div id="breadcrumb_right"><a href="../toc.html">目录页</a></div>
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        <a href="#" target="_blank">CodeIgniter 中国首页</a>&nbsp;&#8250;&nbsp;
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<h1>应用程序流程图</h1>

<p>下图说明数据流如何贯穿整个系统：</p>

<div><img src="../images/appflowchart.gif" width="769" height="212" alt="CodeIgniter 应用程序流程图" /></div>

<ol>
<li>index.php 作为前端控制器，初始化运行 CodeIgniter 所需要的基本资源。</li>
<li>Router 检查 HTTP 请求，以确定谁来处理请求。</li>
<li>如果缓存(Cache)文件存在，它将绕过通常的系统执行顺序，被直接发送给浏览器。</li>
<li>安全(Security)。应用程序控制器(Application Controller)装载之前，HTTP 请求和任何用户提交的数据将被过滤。</li>
<li>控制器(Controller)装载模型、核心库、辅助函数，以及任何处理特定请求所需的其它资源。</li>
<li>最终视图(View)渲染发送到 Web 浏览器中的内容。如果开启缓存(Caching)，视图首先被缓存，所以将可用于以后的请求。</li>
</ol><p>&nbsp;</p>
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翻译贡献者:
Hex</div>
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最后修改: 2012-02-06 01:19:24</div>
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