ThinkPHP3.2 加载过程（一），thinkphp3.2加载_PHP教程

ThinkPHP3.2 加载过程（一），thinkphp3.2加载

加载过程(官方介绍) ：

1. <span class="pun">用户<span class="pln">URL<span class="pun">请求</span></span></span>
2. <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>
3. <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>
4. <span class="pun">记录初始运行时间和内存开销</span>
5. <span class="pun">系统常量判断及定义</span>
6. <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>
7. <span class="pun">设置错误处理机制和自动加载机制</span>
8. <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>
9. <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>
10. <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>
11. <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>
12. <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>
13. <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>
14. <span class="pun">加载系统别名定义</span>
15. <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>
16. <span class="pun">加载系统行为定义</span>
17. <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>
18. <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>
19. <span class="pun">如果是部署模式则生成应用编译缓存文件</span>
20. <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>
21. <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>
22. <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>
23. <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>
24. <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>
25. <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>
26. <span class="pun">判断并加载动态配置和函数文件</span>
27. <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>
28. <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>
29. <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>
30. <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>
31. <span class="pun">获取请求的模块信息</span>
32. <span class="pun">检测模块是否存在和允许访问</span>
33. <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>
34. <span class="pun">判断并加载模块的动态配置和函数文件</span>
35. <span class="pun">模块的<span class="pln">URL<span class="pun">模式判断</span></span></span>
36. <span class="pun">模块的路由检测（<span class="pln">URL_ROUTER_ON<span class="pun">开启）</span></span></span>
37. <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>
38. <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>
39. <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>
40. <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>
41. <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>
42. <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>
43. <span class="pun">根据请求执行控制器方法</span>
44. <span class="pun">如果控制器不存在则检测空控制器是否存在</span>
45. <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>
46. <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>
47. <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>
48. <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>
49. <span class="pun">判断前置操作方法是否定义，有的话执行</span>
50. <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>
51. <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>
52. <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>
53. <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>
54. <span class="pun">自动识别当前主题以及定位模版文件</span>
55. <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>
56. <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>
57. <span class="pun">模版引擎解析模版内容后生成模版缓存</span>
58. <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>
59. <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>
60. <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>
61. <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>
62. <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>
63. <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>
64. <span class="pun">判断后置操作方法是否定义，有的话执行</span>
65. <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>
66. <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>
67. <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>
68. <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 ）

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