Illustrated ThinkPHP5 framework (2): application running process and life cycle

<?php
namespace app\index\controller; class Index {
public function index()
   {
      return &#39;hello,thinkphp!&#39;;
   } 
}

<?php
namespace app\index\controller; class Index {
public function index() {
return &#39;index&#39;; } public function hello($name) {
return &#39;Hello,&#39;.$name; }
}

<?php
// 应用入口文件
// 定义项目路径 
define(&#39;APP_PATH&#39;, __DIR__ . &#39;/../application/&#39;); 
// 加载框架引导文件 
require __DIR__ . &#39;/../thinkphp/start.php&#39;;

<?php
namespace think;
// ThinkPHP 引导文件
// 加载基础文件
require __DIR__ . &#39;/base.php&#39;;
// 执行应用
App::run()->send();

<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

define(&#39;THINK_VERSION&#39;, &#39;5.0.5&#39;);
define(&#39;THINK_START_TIME&#39;, microtime(true));
define(&#39;THINK_START_MEM&#39;, memory_get_usage());
define(&#39;EXT&#39;, &#39;.php&#39;);
define(&#39;DS&#39;, DIRECTORY_SEPARATOR);
defined(&#39;THINK_PATH&#39;) or define(&#39;THINK_PATH&#39;, __DIR__ . DS);
define(&#39;LIB_PATH&#39;, THINK_PATH . &#39;library&#39; . DS);
define(&#39;CORE_PATH&#39;, LIB_PATH . &#39;think&#39; . DS);
define(&#39;TRAIT_PATH&#39;, LIB_PATH . &#39;traits&#39; . DS);
defined(&#39;APP_PATH&#39;) or define(&#39;APP_PATH&#39;, dirname($_SERVER[&#39;SCRIPT_FILENAME&#39;]) . DS);
defined(&#39;ROOT_PATH&#39;) or define(&#39;ROOT_PATH&#39;, dirname(realpath(APP_PATH)) . DS);
defined(&#39;EXTEND_PATH&#39;) or define(&#39;EXTEND_PATH&#39;, ROOT_PATH . &#39;extend&#39; . DS);
defined(&#39;VENDOR_PATH&#39;) or define(&#39;VENDOR_PATH&#39;, ROOT_PATH . &#39;vendor&#39; . DS);
defined(&#39;RUNTIME_PATH&#39;) or define(&#39;RUNTIME_PATH&#39;, ROOT_PATH . &#39;runtime&#39; . DS);
defined(&#39;LOG_PATH&#39;) or define(&#39;LOG_PATH&#39;, RUNTIME_PATH . &#39;log&#39; . DS);
defined(&#39;CACHE_PATH&#39;) or define(&#39;CACHE_PATH&#39;, RUNTIME_PATH . &#39;cache&#39; . DS);
defined(&#39;TEMP_PATH&#39;) or define(&#39;TEMP_PATH&#39;, RUNTIME_PATH . &#39;temp&#39; . DS);
defined(&#39;CONF_PATH&#39;) or define(&#39;CONF_PATH&#39;, APP_PATH); // 配置文件目录
defined(&#39;CONF_EXT&#39;) or define(&#39;CONF_EXT&#39;, EXT); // 配置文件后缀
defined(&#39;ENV_PREFIX&#39;) or define(&#39;ENV_PREFIX&#39;, &#39;PHP_&#39;); // 环境变量的配置前缀

// 环境常量
define(&#39;IS_CLI&#39;, PHP_SAPI == &#39;cli&#39; ? true : false);
define(&#39;IS_WIN&#39;, strpos(PHP_OS, &#39;WIN&#39;) !== false);

// 载入Loader类
require CORE_PATH . &#39;Loader.php&#39;;

// 加载环境变量配置文件
if (is_file(ROOT_PATH . &#39;.env&#39;)) {
    $env = parse_ini_file(ROOT_PATH . &#39;.env&#39;, true);
    foreach ($env as $key => $val) {
        $name = ENV_PREFIX . strtoupper($key);
        if (is_array($val)) {
            foreach ($val as $k => $v) {
                $item = $name . &#39;_&#39; . strtoupper($k);
                putenv("$item=$v");
            }
        } else {
            putenv("$name=$val");
        }
    }
}

// 注册自动加载
\think\Loader::register();

// 注册错误和异常处理机制
\think\Error::register();

// 加载惯例配置文件
\think\Config::set(include THINK_PATH . &#39;convention&#39; . EXT);

/**
     * 初始化应用
     */
    public static function initCommon()
    {
        if (empty(self::$init)) {
            // 初始化应用
            $config       = self::init();
            self::$suffix = $config['class_suffix'];

            // 应用调试模式
            self::$debug = Env::get('app_debug', Config::get('app_debug'));
            if (!self::$debug) {
                ini_set('display_errors', 'Off');
            } elseif (!IS_CLI) {
                //重新申请一块比较大的buffer
                if (ob_get_level() > 0) {
                    $output = ob_get_clean();
                }
                ob_start();
                if (!empty($output)) {
                    echo $output;
                }
            }

            // 注册应用命名空间
            self::$namespace = $config['app_namespace'];
            Loader::addNamespace($config['app_namespace'], APP_PATH);
            if (!empty($config['root_namespace'])) {
                Loader::addNamespace($config['root_namespace']);
            }

            // 加载额外文件
            if (!empty($config['extra_file_list'])) {
                foreach ($config['extra_file_list'] as $file) {
                    $file = strpos($file, '.') ? $file : APP_PATH . $file . EXT;
                    if (is_file($file) && !isset(self::$file[$file])) {
                        include $file;
                        self::$file[$file] = true;
                    }
                }
            }

            // 设置系统时区
            date_default_timezone_set($config['default_timezone']);

            // 监听app_init
            Hook::listen('app_init');

            self::$init = true;
        }
        return Config::get();
    }

    /**
     * 初始化应用或模块
     * @access public
     * @param string $module 模块名
     * @return array
     */
    private static function init($module = '')
    {
        // 定位模块目录
        $module = $module ? $module . DS : '';

        // 加载初始化文件
        if (is_file(APP_PATH . $module . 'init' . EXT)) {
            include APP_PATH . $module . 'init' . EXT;
        } elseif (is_file(RUNTIME_PATH . $module . 'init' . EXT)) {
            include RUNTIME_PATH . $module . 'init' . EXT;
        } else {
            $path = APP_PATH . $module;
            // 加载模块配置
            $config = Config::load(CONF_PATH . $module . 'config' . CONF_EXT);
            // 读取数据库配置文件
            $filename = CONF_PATH . $module . 'database' . CONF_EXT;
            Config::load($filename, 'database');
            // 读取扩展配置文件
            if (is_dir(CONF_PATH . $module . 'extra')) {
                $dir   = CONF_PATH . $module . 'extra';
                $files = scandir($dir);
                foreach ($files as $file) {
                    if (strpos($file, CONF_EXT)) {
                        $filename = $dir . DS . $file;
                        Config::load($filename, pathinfo($file, PATHINFO_FILENAME));
                    }
                }
            }

            // 加载应用状态配置
            if ($config['app_status']) {
                $config = Config::load(CONF_PATH . $module . $config['app_status'] . CONF_EXT);
            }

            // 加载行为扩展文件
            if (is_file(CONF_PATH . $module . 'tags' . EXT)) {
                Hook::import(include CONF_PATH . $module . 'tags' . EXT);
            }

            // 加载公共文件
            if (is_file($path . 'common' . EXT)) {
                include $path . 'common' . EXT;
            }

            // 加载当前模块语言包
            if ($module) {
                Lang::load($path . 'lang' . DS . Request::instance()->langset() . EXT);
            }
        }
        return Config::get();
    }

/**
     * URL路由检测（根据PATH_INFO)
     * @access public
     * @param  \think\Request $request
     * @param  array          $config
     * @return array
     * @throws \think\Exception
     */
    public static function routeCheck($request, array $config)
    {
        $path   = $request->path();
        $depr   = $config['pathinfo_depr'];
        $result = false;
        // 路由检测
        $check = !is_null(self::$routeCheck) ? self::$routeCheck : $config['url_route_on'];
        if ($check) {
            // 开启路由
            if (is_file(RUNTIME_PATH . 'route.php')) {
                // 读取路由缓存
                $rules = include RUNTIME_PATH . 'route.php';
                if (is_array($rules)) {
                    Route::rules($rules);
                }
            } else {
                $files = $config['route_config_file'];
                foreach ($files as $file) {
                    if (is_file(CONF_PATH . $file . CONF_EXT)) {
                        // 导入路由配置
                        $rules = include CONF_PATH . $file . CONF_EXT;
                        if (is_array($rules)) {
                            Route::import($rules);
                        }
                    }
                }
            }

            // 路由检测（根据路由定义返回不同的URL调度）
            $result = Route::check($request, $path, $depr, $config['url_domain_deploy']);
            $must   = !is_null(self::$routeMust) ? self::$routeMust : $config['url_route_must'];
            if ($must && false === $result) {
                // 路由无效
                throw new RouteNotFoundException();
            }
        }
        if (false === $result) {
            // 路由无效 解析模块/控制器/操作/参数... 支持控制器自动搜索
            $result = Route::parseUrl($path, $depr, $config['controller_auto_search']);
        }
        return $result;
    }

    /**
     * 设置应用的路由检测机制
     * @access public
     * @param  bool $route 是否需要检测路由
     * @param  bool $must  是否强制检测路由
     * @return void
     */
    public static function route($route, $must = false)
    {
        self::$routeCheck = $route;
        self::$routeMust  = $must;
    }
}

<?php
// 定义应用目录 
define(&#39;APP_PATH&#39;, __DIR__ . &#39;/../application/&#39;); 
// 加载框架引导文件 
require __DIR__ . &#39;/../thinkphp/start.php&#39;;

<?php
namespace my;
class Hello
{
  public function  index()
  {
    return &#39;hello tp5&#39;;
  }
}

<?php
namespace app\index\controller;
class Index
{
    public function index()
    {
      $obj = new \my\Hello();
       return   $obj->index();
    }
}

\think\Loader::addNamespace('my','../application/extend/my/');

\think\Loader::addNamespace([ 'my' => '../application/extend/my/', 'org' => '../application/extend/org/', ]);

'root_namespace' => [ 'my' => '../application/extend/my/', 'org' => '../application/extend/org/', ]

namespace app\index\controller; load_trait('controller/Jump'); class index {
// 引入traits\controller\Jump
use \traits\controller\Jump; public function index() {
$this->assign('name','value');
$this->show('index'); }
}

namespace app\index\controller; class index {
use \traits\controller\Jump;
public function index()
{
}
 }

namespace app\index\controller; load_trait('controller/Other'); load_trait('controller/Jump'); class index
{
use \traits\controller\Other; use \traits\controller\Jump; public function index() { }
}

namespace app\index\controller; load_trait('controller/Other'); load_trait('controller/Jump'); class index {
use \traits\controller\Other,\traits\controller\Jump;
public function index()
{
} 
}