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

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

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Jul 13, 2016 am 09:52 AM

thinkphp thinkphp3.2 one load process

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

Loading process (official introduction) :

用户URL请求
调用应用入口文件（通常是网站的index.php）
载入框架入口文件（ThinkPHP.php）
记录初始运行时间和内存开销
系统常量判断及定义
载入框架引导类（ThinkThink）并执行Think::start方法进行应用初始化
设置错误处理机制和自动加载机制
调用ThinkStorage类进行存储初始化（由STORAGE_TYPE常量定义存储类型）
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22）
读取应用模式（由APP_MODE常量定义）的定义文件（以下以普通模式为例说明）
加载当前应用模式定义的核心文件（普通模式是 ThinkPHP/Mode/common.php）
加载惯例配置文件（普通模式是 ThinkPHP/Conf/convention.php）
加载应用配置文件（普通模式是 Application/Common/Conf/config.php）
加载系统别名定义
判断并读取应用别名定义文件（普通模式是 Application/Common/Conf/alias.php）
加载系统行为定义
判断并读取应用行为定义文件（普通模式是 Application/Common/Conf/tags.php）
加载框架底层语言包（普通模式是 ThinkPHP/Lang/zh-cn.php）
如果是部署模式则生成应用编译缓存文件
加载调试模式系统配置文件（ThinkPHP/Conf/debug.php）
判断并读取应用的调试配置文件（默认是 Application/Common/Conf/debug.php）
判断应用状态并读取状态配置文件（如果APP_STATUS常量定义不为空的话）
检测应用目录结构并自动生成（如果CHECK_APP_DIR配置开启并且RUNTIME_PATH目录不存在的情况下）
调用ThinkApp类的run方法启动应用
应用初始化（app_init）标签位侦听并执行绑定行为
判断并加载动态配置和函数文件
调用ThinkDispatcher::dispatch方法进行URL请求调度
自动识别兼容URL模式和命令行模式下面的$_SERVER['PATH_INFO']参数
检测域名部署以及完成模块和控制器的绑定操作（APP_SUB_DOMAIN_DEPLOY参数开启）
分析URL地址中的PATH_INFO信息
获取请求的模块信息
检测模块是否存在和允许访问
判断并加载模块配置文件、别名定义、行为定义及函数文件
判断并加载模块的动态配置和函数文件
模块的URL模式判断
模块的路由检测（URL_ROUTER_ON开启）
PATH_INFO处理（path_info）标签位侦听并执行绑定行为
URL后缀检测（URL_DENY_SUFFIX以及URL_HTML_SUFFIX处理）
获取当前控制器和操作，以及URL其他参数
URL请求调度完成（url_dispatch）标签位侦听并执行绑定行为
应用开始（app_begin）标签位侦听并执行绑定行为
调用SESSION_OPTIONS配置参数进行Session初始化（如果不是命令行模式）
根据请求执行控制器方法
如果控制器不存在则检测空控制器是否存在
控制器开始（action_begin）标签位侦听并执行绑定行为
默认调用系统的ReadHtmlCache行为读取静态缓存（HTML_CACHE_ON参数开启）
判断并调用控制器的_initialize初始化方法
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
判断前置操作方法是否定义，有的话执行
Action参数绑定检测，自动匹配操作方法的参数
如果有模版渲染（调用控制器display方法）
视图开始（view_begin）标签位侦听并执行绑定行为
调用ThinkView的fetch方法解析并获取模版内容
自动识别当前主题以及定位模版文件
视图解析（view_parse）标签位侦听并执行绑定行为
默认调用内置ParseTemplate行为解析模版（普通模式下面）
模版引擎解析模版内容后生成模版缓存
模版过滤替换（template_filter）标签位侦听并执行绑定行为
默认调用系统的ContentReplace行为进行模版替换
输出内容过滤（view_filter）标签位侦听并执行绑定行为
默认调用系统的WriteHtmlCache行为写入静态缓存（HTML_CACHE_ON参数开启）
调用ThinkView类的render方法输出渲染内容
视图结束（view_end）标签位侦听并执行绑定行为
判断后置操作方法是否定义，有的话执行
控制器结束（action_end）标签位侦听并执行绑定行为
应用结束（app_end）标签位侦听并执行绑定行为
执行系统的ShowPageTrace行为（SHOW_PAGE_TRACE参数开启并且不是AJAX请求）
日志信息存储写入

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';

Copy after login

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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