接着上篇 thinkphp5源码分析1 继续thinkphp的源码分析。
上一章我们讲到了run和send方法，这两个方法到底干了些什么呢？
我跟别人的分析方法是有区别的，他们只发一些代码上来分析。这和源代码中的注释区别不大，并不能让读者或者php的开发者能一下子看懂整个代码。反而越看越不明白。失去了方向和兴趣。
当然代码还是要看的，更重要的是看代码后面的逻辑。
// 2. 执行应用
App::run()->send();
App->run()
public static function run(Request $request = null)
{
//获取了一个request对象（实例）
$request = is_null($request) ? Request::instance() : $request;
try {
//初始化配置，后面的代码都围绕着$config做的操作
$config = self::initCommon();
...
return $response;
}
都写到这了，你也该知道下面要干什么了吧。
对，把这个对象，和配置输出来。看看到底是什么样子。后面的代码看起来就so easy了。
Array
(
[app_host] =>
[app_debug] =>
[app_trace] =>
[app_status] =>
[app_multi_module] => 1
[auto_bind_module] =>
[root_namespace] => Array
(
)
[extra_file_list] => Array
(
[0] => /Users/alert/Desktop/thinkphp/thinkphp/helper.php
)
[default_return_type] => html
[default_ajax_return] => json
[default_jsonp_handler] => jsonpReturn
[var_jsonp_handler] => callback
[default_timezone] => PRC
[lang_switch_on] =>
[default_filter] =>
[default_lang] => zh-cn
[class_suffix] =>
[controller_suffix] =>
[default_module] => index
[deny_module_list] => Array
(
[0] => common
)
[default_controller] => Index
[default_action] => index
[default_validate] =>
[empty_controller] => Error
[use_action_prefix] =>
[action_suffix] =>
[controller_auto_search] =>
[var_pathinfo] => s
[pathinfo_fetch] => Array
(
[0] => ORIG_PATH_INFO
[1] => REDIRECT_PATH_INFO
[2] => REDIRECT_URL
)
[pathinfo_depr] => /
[https_agent_name] =>
[url_html_suffix] => html
[url_common_param] =>
[url_param_type] => 0
[url_route_on] => 1
[route_config_file] => Array
(
[0] => route
)
[route_complete_match] =>
[url_route_must] =>
[url_domain_deploy] =>
[url_domain_root] =>
[url_convert] => 1
[url_controller_layer] => controller
[var_method] => _method
[var_ajax] => _ajax
[var_pjax] => _pjax
[request_cache] =>
[request_cache_expire] =>
[request_cache_except] => Array
(
)
[template] => Array
(
[type] => Think
[view_path] =>
[view_suffix] => html
[view_depr] => /
[tpl_begin] => {
[tpl_end] => }
[taglib_begin] => {
[taglib_end] => }
)
[view_replace_str] => Array
(
)
[dispatch_success_tmpl] => /Users/alert/Desktop/thinkphp/thinkphp/tpl/dispatch_jump.tpl
[dispatch_error_tmpl] => /Users/alert/Desktop/thinkphp/thinkphp/tpl/dispatch_jump.tpl
[exception_tmpl] => /Users/alert/Desktop/thinkphp/thinkphp/tpl/think_exception.tpl
[error_message] => 页面错误！请稍后再试～
[show_error_msg] =>
[exception_handle] =>
[record_trace] =>
[log] => Array
(
[type] => File
[path] => /Users/alert/Desktop/thinkphp/runtime/log/
[level] => Array
(
)
)
[trace] => Array
(
[type] => Html
)
[cache] => Array
(
[type] => File
[path] => /Users/alert/Desktop/thinkphp/runtime/cache/
[prefix] =>
[expire] => 0
)
[session] => Array
(
[id] =>
[var_session_id] =>
[prefix] => think
[type] =>
[auto_start] => 1
)
[cookie] => Array
(
[prefix] =>
[expire] => 0
[path] => /
[domain] =>
[secure] =>
[httponly] =>
[setcookie] => 1
)
[database] => Array
(
[type] => mysql
[dsn] =>
[hostname] => 127.0.0.1
[database] =>
[username] => root
[password] =>
[hostport] =>
[params] => Array
(
)
[charset] => utf8
[prefix] =>
[debug] => 1
[deploy] => 0
[rw_separate] =>
[master_num] => 1
[slave_no] =>
[fields_strict] => 1
[resultset_type] => array
[auto_timestamp] =>
[datetime_format] => Y-m-d H:i:s
[sql_explain] =>
)
[paginate] => Array
(
[type] => bootstrap
[var_page] => page
[list_rows] => 15
)
[console] => Array
(
[name] => Think Console
[version] => 0.1
[user] =>
)
)
通过self::initCommon()方法把文件convention.php的配置读到了$config数组中了。里面的内容是不是很快就看懂了呢？
再看Request对象
think\Request Object
(
[method:protected] => GET
[domain:protected] =>
[url:protected] =>
[baseUrl:protected] =>
[baseFile:protected] =>
[root:protected] =>
[pathinfo:protected] => /
[path:protected] => /
[routeInfo:protected] => Array
(
)
[env:protected] =>
[dispatch:protected] => Array
(
[type] => module
[module] => Array
(
[0] =>
[1] =>
[2] =>
)
)
[module:protected] => index
[controller:protected] => Index
[action:protected] => index
[langset:protected] => zh-cn
[param:protected] => Array
(
)
[get:protected] => Array
(
)
[post:protected] => Array
(
)
[request:protected] => Array
(
)
[route:protected] => Array
(
)
[put:protected] =>
[session:protected] => Array
(
)
[file:protected] => Array
(
)
[cookie:protected] => Array
(
)
[server:protected] => Array
(
[HTTP_HOST] => localhost:8888
[HTTP_CONNECTION] => keep-alive
[HTTP_CACHE_CONTROL] => max-age=0
[HTTP_UPGRADE_INSECURE_REQUESTS] => 1
[HTTP_USER_AGENT] => Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36
[HTTP_ACCEPT] => text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
[HTTP_REFERER] => http://localhost:8888/
[HTTP_ACCEPT_ENCODING] => gzip, deflate, br
[HTTP_ACCEPT_LANGUAGE] => zh-CN,zh;q=0.9,en;q=0.8
[HTTP_COOKIE] => Phpstorm-3a8f796c=7fdba4f6-f510-4bae-ba6c-d793a31084ea; __utmz=111872281.1522708417.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); KXnd_2132_widthauto=1; KXnd_2132_saltkey=sp7PNpii; KXnd_2132_lastvisit=1523585123; KXnd_2132_ulastactivity=9714C6ZrmbU65nf4SXyZdVeYmZNXjs3HLIl7wOjC%2FNCWAr6elOiR; KXnd_2132_lastcheckfeed=1%7C1523588755; KXnd_2132_nofavfid=1; UM_distinctid=162eaa500235ed-0cb2adee1adbca-336b7b05-1aeaa0-162eaa50024e3d; CNZZDATA1256279252=518537777-1524354653-http%253A%252F%252Flocalhost%253A8888%252F%7C1524404828; __utmc=111872281; __utma=111872281.1830718118.1522708417.1524462548.1524473402.21; __utmt=1; __utmb=111872281.15.10.1524473402
[PATH] => /usr/bin:/bin:/usr/sbin:/sbin
[SERVER_SIGNATURE] =>
[SERVER_SOFTWARE] => Apache/2.2.34 (Unix) mod_wsgi/3.5 Python/2.7.13 PHP/7.2.1 mod_ssl/2.2.34 OpenSSL/1.0.2j DAV/2 mod_fastcgi/2.4.6 mod_perl/2.0.9 Perl/v5.24.0
[SERVER_NAME] => localhost
[SERVER_ADDR] => ::1
[SERVER_PORT] => 8888
[REMOTE_ADDR] => ::1
[DOCUMENT_ROOT] => /Applications/MAMP/htdocs
[SERVER_ADMIN] => [email protected]
[SCRIPT_FILENAME] => /Applications/MAMP/htdocs/thp/index.php
[REMOTE_PORT] => 56667
[GATEWAY_INTERFACE] => CGI/1.1
[SERVER_PROTOCOL] => HTTP/1.1
[REQUEST_METHOD] => GET
[QUERY_STRING] =>
[REQUEST_URI] => /thp/
[SCRIPT_NAME] => /thp/index.php
[PHP_SELF] => /thp/index.php
[REQUEST_TIME_FLOAT] => 1524476053.033
[REQUEST_TIME] => 1524476053
[argv] => Array
(
)
[argc] => 0
)
[header:protected] => Array
(
)
[mimeType:protected] => Array
(
[xml] => application/xml,text/xml,application/x-xml
[json] => application/json,text/x-json,application/jsonrequest,text/json
[js] => text/javascript,application/javascript,application/x-javascript
[css] => text/css
[rss] => application/rss+xml
[yaml] => application/x-yaml,text/yaml
[atom] => application/atom+xml
[pdf] => application/pdf
[text] => text/plain
[image] => image/png,image/jpg,image/jpeg,image/pjpeg,image/gif,image/webp,image/*
[csv] => text/csv
[html] => text/html,application/xhtml+xml,*/*
)
[content:protected] =>
[filter:protected] =>
[bind:protected] => Array
(
)
[input:protected] =>
[cache:protected] =>
[isCheckCache:protected] =>
)
找到点感觉没有，在run()的结尾返回了一个response。那就顺便看看response是个什么。so easy！
think\Response Object
(
[data:protected] => 天啦！你看到没有内容已经在run()里面都处理完了。那send()干了些啥。
莫非真的是发送了不一样的东西么？
Response->send()
public function send()
{
// 处理输出数据
$data = $this->getContent();
echo $data;
没错，精简下来的代码就这点，用getContent()方法读取Response对象里的data数据。[data:protected] 这个内容是protected的。类外是无法访问的。所以写了个getContent()的方法。
到目前为止从URL访问，到数据返回整个框架里面处理都写完了。
是不是比想象的要简单了，记住分析事物，不要上来就事无巨细的分析。否则你会陷入代码的迷宫里无法自拔。最后匆匆的放弃！什么也没发现。