加载过程(官方介绍) :
<span class="pun">用户<span class="pln">URL<span class="pun">请求</span></span></span>
<span class="pun">调用应用入口文件(通常是网站的<span class="pln">index<span class="pun">.<span class="pln">php<span class="pun">)</span></span></span></span></span>
<span class="pun">载入框架入口文件(<span class="typ">ThinkPHP<span class="pun">.<span class="pln">php<span class="pun">)</span></span></span></span></span>
<span class="pun">记录初始运行时间和内存开销</span>
<span class="pun">系统常量判断及定义</span>
<span class="pun">载入框架引导类(<span class="typ">Think<span class="pln">\Think<span class="pun">)并执行<span class="typ">Think<span class="pun">::<span class="pln">start<span class="pun">方法进行应用初始化</span></span></span></span></span></span></span></span>
<span class="pun">设置错误处理机制和自动加载机制</span>
<span class="pun">调用<span class="typ">Think<span class="pln">\Storage<span class="pun">类进行存储初始化(由<span class="pln">STORAGE_TYPE<span class="pun">常量定义存储类型)</span></span></span></span></span></span>
<span class="pun">部署模式下如果存在应用编译缓存文件则直接加载(直接跳转到步骤<span class="lit">22<span class="pun">)</span></span></span>
<span class="pun">读取应用模式(由<span class="pln">APP_MODE<span class="pun">常量定义)的定义文件(以下以普通模式为例说明)</span></span></span>
<span class="pun">加载当前应用模式定义的核心文件(普通模式是<span class="pln"> <span class="typ">ThinkPHP<span class="pun">/<span class="typ">Mode<span class="pun">/<span class="pln">common<span class="pun">.<span class="pln">php<span class="pun">)</span></span></span></span></span></span></span></span></span></span>
<span class="pun">加载惯例配置文件(普通模式是<span class="pln"> <span class="typ">ThinkPHP<span class="pun">/<span class="typ">Conf<span class="pun">/<span class="pln">convention<span class="pun">.<span class="pln">php<span class="pun">)</span></span></span></span></span></span></span></span></span></span>
<span class="pun">加载应用配置文件(普通模式是<span class="pln"> <span class="typ">Application<span class="pun">/<span class="typ">Common<span class="pun">/<span class="typ">Conf<span class="pun">/<span class="pln">config<span class="pun">.<span class="pln">php<span class="pun">)</span></span></span></span></span></span></span></span></span></span></span></span>
<span class="pun">加载系统别名定义</span>
<span class="pun">判断并读取应用别名定义文件(普通模式是<span class="pln"> <span class="typ">Application<span class="pun">/<span class="typ">Common<span class="pun">/<span class="typ">Conf<span class="pun">/<span class="kwd">alias<span class="pun">.<span class="pln">php<span class="pun">)</span></span></span></span></span></span></span></span></span></span></span></span>
<span class="pun">加载系统行为定义</span>
<span class="pun">判断并读取应用行为定义文件(普通模式是<span class="pln"> <span class="typ">Application<span class="pun">/<span class="typ">Common<span class="pun">/<span class="typ">Conf<span class="pun">/<span class="pln">tags<span class="pun">.<span class="pln">php<span class="pun">)</span></span></span></span></span></span></span></span></span></span></span></span>
<span class="pun">加载框架底层语言包(普通模式是<span class="pln"> <span class="typ">ThinkPHP<span class="pun">/<span class="typ">Lang<span class="pun">/<span class="pln">zh<span class="pun">-<span class="pln">cn<span class="pun">.<span class="pln">php<span class="pun">)</span></span></span></span></span></span></span></span></span></span></span></span>
<span class="pun">如果是部署模式则生成应用编译缓存文件</span>
<span class="pun">加载调试模式系统配置文件(<span class="typ">ThinkPHP<span class="pun">/<span class="typ">Conf<span class="pun">/<span class="pln">debug<span class="pun">.<span class="pln">php<span class="pun">)</span></span></span></span></span></span></span></span></span>
<span class="pun">判断并读取应用的调试配置文件(默认是<span class="pln"> <span class="typ">Application<span class="pun">/<span class="typ">Common<span class="pun">/<span class="typ">Conf<span class="pun">/<span class="pln">debug<span class="pun">.<span class="pln">php<span class="pun">)</span></span></span></span></span></span></span></span></span></span></span></span>
<span class="pun">判断应用状态并读取状态配置文件(如果<span class="pln">APP_STATUS<span class="pun">常量定义不为空的话)</span></span></span>
<span class="pun">检测应用目录结构并自动生成(如果<span class="pln">CHECK_APP_DIR<span class="pun">配置开启并且<span class="pln">RUNTIME_PATH<span class="pun">目录不存在的情况下)</span></span></span></span></span>
<span class="pun">调用<span class="typ">Think<span class="pln">\App<span class="pun">类的<span class="pln">run<span class="pun">方法启动应用</span></span></span></span></span></span>
<span class="pun">应用初始化(<span class="pln">app_init<span class="pun">)标签位侦听并执行绑定行为</span></span></span>
<span class="pun">判断并加载动态配置和函数文件</span>
<span class="pun">调用<span class="typ">Think<span class="pln">\Dispatcher<span class="pun">::<span class="pln">dispatch<span class="pun">方法进行<span class="pln">URL<span class="pun">请求调度</span></span></span></span></span></span></span></span>
<span class="pun">自动识别兼容<span class="pln">URL<span class="pun">模式和命令行模式下面的<span class="pln">$_SERVER<span class="pun">[<span class="str">'PATH_INFO'<span class="pun">]参数</span></span></span></span></span></span></span>
<span class="pun">检测域名部署以及完成模块和控制器的绑定操作(<span class="pln">APP_SUB_DOMAIN_DEPLOY<span class="pun">参数开启)</span></span></span>
<span class="pun">分析<span class="pln">URL<span class="pun">地址中的<span class="pln">PATH_INFO<span class="pun">信息</span></span></span></span></span>
<span class="pun">获取请求的模块信息</span>
<span class="pun">检测模块是否存在和允许访问</span>
<span class="pun">判断并加载模块配置文件、别名定义、行为定义及函数文件</span>
<span class="pun">判断并加载模块的动态配置和函数文件</span>
<span class="pun">模块的<span class="pln">URL<span class="pun">模式判断</span></span></span>
<span class="pun">模块的路由检测(<span class="pln">URL_ROUTER_ON<span class="pun">开启)</span></span></span>
<span class="pln">PATH_INFO<span class="pun">处理(<span class="pln">path_info<span class="pun">)标签位侦听并执行绑定行为</span></span></span></span>
<span class="pln">URL<span class="pun">后缀检测(<span class="pln">URL_DENY_SUFFIX<span class="pun">以及<span class="pln">URL_HTML_SUFFIX<span class="pun">处理)</span></span></span></span></span></span>
<span class="pun">获取当前控制器和操作,以及<span class="pln">URL<span class="pun">其他参数</span></span></span>
<span class="pln">URL<span class="pun">请求调度完成(<span class="pln">url_dispatch<span class="pun">)标签位侦听并执行绑定行为</span></span></span></span>
<span class="pun">应用开始(<span class="pln">app_begin<span class="pun">)标签位侦听并执行绑定行为</span></span></span>
<span class="pun">调用<span class="pln">SESSION_OPTIONS<span class="pun">配置参数进行<span class="typ">Session<span class="pun">初始化(如果不是命令行模式)</span></span></span></span></span>
<span class="pun">根据请求执行控制器方法</span>
<span class="pun">如果控制器不存在则检测空控制器是否存在</span>
<span class="pun">控制器开始(<span class="pln">action_begin<span class="pun">)标签位侦听并执行绑定行为</span></span></span>
<span class="pun">默认调用系统的<span class="typ">ReadHtmlCache<span class="pun">行为读取静态缓存(<span class="pln">HTML_CACHE_ON<span class="pun">参数开启)</span></span></span></span></span>
<span class="pun">判断并调用控制器的<span class="pln">_initialize<span class="pun">初始化方法</span></span></span>
<span class="pun">判断操作方法是否存在,如果不存在则检测是否定义空操作方法</span>
<span class="pun">判断前置操作方法是否定义,有的话执行</span>
<span class="typ">Action<span class="pun">参数绑定检测,自动匹配操作方法的参数</span></span>
<span class="pun">如果有模版渲染(调用控制器<span class="pln">display<span class="pun">方法)</span></span></span>
<span class="pun">视图开始(<span class="pln">view_begin<span class="pun">)标签位侦听并执行绑定行为</span></span></span>
<span class="pun">调用<span class="typ">Think<span class="pln">\View<span class="pun">的<span class="pln">fetch<span class="pun">方法解析并获取模版内容</span></span></span></span></span></span>
<span class="pun">自动识别当前主题以及定位模版文件</span>
<span class="pun">视图解析(<span class="pln">view_parse<span class="pun">)标签位侦听并执行绑定行为</span></span></span>
<span class="pun">默认调用内置<span class="typ">ParseTemplate<span class="pun">行为解析模版(普通模式下面)</span></span></span>
<span class="pun">模版引擎解析模版内容后生成模版缓存</span>
<span class="pun">模版过滤替换(<span class="pln">template_filter<span class="pun">)标签位侦听并执行绑定行为</span></span></span>
<span class="pun">默认调用系统的<span class="typ">ContentReplace<span class="pun">行为进行模版替换</span></span></span>
<span class="pun">输出内容过滤(<span class="pln">view_filter<span class="pun">)标签位侦听并执行绑定行为</span></span></span>
<span class="pun">默认调用系统的<span class="typ">WriteHtmlCache<span class="pun">行为写入静态缓存(<span class="pln">HTML_CACHE_ON<span class="pun">参数开启)</span></span></span></span></span>
<span class="pun">调用<span class="typ">Think<span class="pln">\View<span class="pun">类的<span class="pln">render<span class="pun">方法输出渲染内容</span></span></span></span></span></span>
<span class="pun">视图结束(<span class="pln">view_end<span class="pun">)标签位侦听并执行绑定行为</span></span></span>
<span class="pun">判断后置操作方法是否定义,有的话执行</span>
<span class="pun">控制器结束(<span class="pln">action_end<span class="pun">)标签位侦听并执行绑定行为</span></span></span>
<span class="pun">应用结束(<span class="pln">app_end<span class="pun">)标签位侦听并执行绑定行为</span></span></span>
<span class="pun">执行系统的<span class="typ">ShowPageTrace<span class="pun">行为(<span class="pln">SHOW_PAGE_TRACE<span class="pun">参数开启并且不是<span class="pln">AJAX<span class="pun">请求)</span></span></span></span></span></span></span>
<span class="pun">日志信息存储写入</span>
代码:
1.入口文件(index.php)
// 检测PHP环境 if(version_compare(PHP_VERSION,'5.3.0','<')) die('require PHP > 5.3.0 !'); // 开启调试模式 建议开发阶段开启 部署阶段注释或者设为false define('APP_DEBUG',True); // 定义应用目录 define('APP_PATH','./Application/'); // 引入ThinkPHP入口文件 require './ThinkPHP/ThinkPHP.php';
作用 1.设置是否是调试模式(在调试模式下即 APP_DEBUG 为True 时候 不会加载上一次编译过的 一个为~runtime.php 开发情况下 建议把开始调试模式)
2.定义APP_PATH 的路径
3.也是最重要的一个 引入ThinkPHP的入口,这里开始,正式开始进行复杂而又简单的TP框架之旅了,没有带好装备的人,可以带上装备,去刷TP框架了。
鄙人跟踪TP源码,在不对TP进行任何修改的情况下介绍页面是如何出现的
( PS: 由于鄙人也是第一次学TP框架 同样也是刚开始学PHP 希望在这里写上一点自己的心得 一来对自己思路做整理 同样也希望能帮助大家 如果有什么错误 希望大家提出 )