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ThinkPHP3.2 loading process (1), thinkphp3.2 loading_PHP tutorial

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2016-07-13 09:52:461111browse

ThinkPHP3.2 loading process (1), thinkphp3.2 loading

Loading process (official introduction) :

  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>

Code:

 1. Entry file (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';

Function 1. Set whether it is debugging mode (in debugging mode, that is, when APP_DEBUG is True, the last compiled one ~runtime.php will not be loaded. In the case of development, it is recommended to start debugging mode)

2. Define the path of APP_PATH

3. It is also the most important one. The entrance to ThinkPHP is introduced. From here on, the complex yet simple TP framework journey officially begins. Those who do not have good equipment can bring their equipment and go brush the TP framework.

I will follow the TP source code and introduce how the page appears without making any modifications to the TP

( PS: Since this is my first time to learn TP framework and also just started to learn PHP, I hope to write down some of my own experience here to sort out my own ideas. I also hope to help everyone. If there are any mistakes, I hope everyone can tell me. )

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