ThinkPHP3.2 loading Process (iv)

Objective:

Due to the relatively lazy, but a bit obsessive-compulsive disorder, so still want to continue to ThinkPHP3.2 loading process this rotten tail building to complement the complete.

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Last article says load App:run ()----under thinkphp/library/think/thinkclass.php

Here is a description of when the app will be defined and loaded

Configuration file thinkphp/mode/common.php When thinkphp/library/think/thinkclass.php was introduced, the app class was introduced at the same time

Functions and class files

    function and class file    ' core '      = =  Array (        Think_path. Common/functions.php ',        common_path. ' Common/function.php ',        core_path. ' Hook '. EXT,        Core_path. ' App '. EXT,        Core_path. ' Dispatcher '. EXT,        //core_path. ' Log '. EXT,        Core_path. ' Route '. EXT,        Core_path. ' Controller '. EXT,        Core_path. ' View '. EXT,        Behavior_path. ' Buildlitebehavior '. EXT,        Behavior_path. ' Parsetemplatebehavior '. EXT,        Behavior_path. ' Contentreplacebehavior '. EXT,    ),

So we know that the APP's class file address is thinkphp/library/think/app.class.php and the Run method is executed

    /**     * Shortcut method used to run the application instance Portal file     * @access public     * @return void *    /static public function run () {        //application First Start labeling        hook::listen (' App_init ');        App::init ();        Apply start tag        hook::listen (' App_begin ');        Session Initialization        if (!IS_CLI) {            session (C (' session_options '));        }        Log application initialization time        G (' inittime ');        App::exec ();        Apply end tag        hook::listen (' app_end ');        return;    }

Analysis of the code under the Run method

First paragraph:

        Apply Initialize tag        hook::listen (' app_init ');

Hook this thinkphp called system hooks (should be like fishing, use this to hook up the fish)

Introduced time: Should he be included in the commom.php this core array is introduced

File Location: thinphp/library/think/hook.class.php

First line: Hook::Listen (' app_init ');

Simplify Your code:

    /**     * Monitor tag plug-in     * @param string $tag tag name     * @param mixed $params incoming parameter     * @return void */    static Publi C function Listen ($tag, & $params =null) {        if (Isset (self:: $tags [$tag])) {            foreach:: $tags [$tag] as $ Name) {                $result =   self::exec ($name, $tag, $params);                if (false = = = $result) {                    //If return false then break plug-in execution                    return;        }}} return;}

where self:: theexec() code is below

    /**     * Execute a plugin     * @param string $name plug-in name     * @param string $tag method Name (sign)          * @param Mixed $params passed in parameter     * @ return void     */    static public function exec ($name, $tag,& $params =null) {        if (' Behavior ' = = substr ($name, -8) {            ///The behavior extension must be            $tag    =   ' run ' using        the Run entry method;} $addon   = new $name ();        Return $addon $tag ($params);    

About when the parameter app_init was passed to the self: :$tags() for a brief explanation

The configured file is also the tags array under thinkphp/mode/common.php

by thinkphp/library/think/thinkclass.php

          The load mode behavior defines          if (isset ($mode [' tags ')]) {Hook::import (the              is_array ($mode [' tags '])? $mode [' Tags ']:include $mode [' tags ']);          }

Tags that are configured to the system hooks

Through the configuration file we see App_init for the class is Buildlitebehavior

The first piece of code summarizes:

Instantiate the Buildlitebehavior class that addresses thinkphp/library/bechavior/buildlitebeavior.class.php and runs the Run method

The approximate code for BuildLiteBeavior.class.php is to put the previously running code together, including the definition of the parameters in it, which is turned off by default, so you don't need to bother

Second paragraph

　　

App::init ();

Collective code:

    /** * Application Initialization * @access public * @return void */static publicly function init () {//Load Dynamic application Common        File and Configuration load_ext_file (Common_path); The log directory is converted to an absolute path by default to the public module under C (' Log_path ', Realpath (log_path). '        /common/');        Defines the system constants for the current request define (' Now_time ', $_server[' request_time ']);        Define (' Request_method ', $_server[' request_method ');        Define (' Is_get ', request_method = = ' GET '? true:false);        Define (' Is_post ', request_method = = ' POST '? true:false);        Define (' Is_put ', request_method = = ' PUT '? true:false);        Define (' Is_delete ', request_method = = ' DELETE '? true:false);        URL dispatch Dispatcher::d ispatch (); if (C (' Request_vars_filter ')) {//Global security filter array_walk_recursive ($_get, ' think_filter '); array_walk_recursive ($_POST, '        Think_filter '); array_walk_recursive ($_request, ' think_filter ');}                 URL Dispatch end tag hook::listen (' Url_dispatch '); Define (' Is_ajax ', ((Isset ($_server[' Http_x_requested_with ')) && strtolower ($_server[' http_x_requested_with ']) = = ' Xmlhttpre Quest ') | | !empty ($_post[c (' Var_ajax_submit ')]) | | !empty ($_get[c (' Var_ajax_submit ')))?        True:false);        Tmpl_exception_file changed to absolute address C (' Tmpl_exception_file ', Realpath (C (' Tmpl_exception_file ')));    return; }

Here the approximate content, through the URL gets the module name: Controller name: Method name

Third paragraph:

        Apply start tag        hook::listen (' App_begin ');

More with previous experience, App_begin's files are in thinkphp/library/behavior/readhtmlcachebehavior.php

And the Run method that runs the file

Run Method code

    The execution entry for the behavior extension must be run public    function run (& $params) {        //Turn on static cache        if (is_get && C (' html_cache_on '))  {            $cacheTime = $this->requirehtmlcache ();            if (false!== $cacheTime && $this->checkhtmlcache (Html_file_name, $cacheTime)) {//static page valid//                read static page output                Echo storage::read (html_file_name, ' HTML ');                Exit ();}}    }

If a cache file rule is defined, the cache file is used, because by default it is turned off

Part III:

        Session Initialization        if (!IS_CLI) {            session (C (' session_options '));        }        Log application initialization time        G (' inittime ');

If it is a request from a Web page, the session is initialized with the session_options rule in the configuration file.

Record initialization time

Part IV:

  App::exec ();

Specific code in the/thinkphp/library/think/app.class.php file exec ()

This method and the basic function is to enable the framework to find the corresponding controller and method.

About Routing and app::exec (); method, next separate specific description

Summarize:

    /**     * Shortcut method used to run the application instance Portal file     * @access public     * @return void *    /static public function run () {        //application First Initialize the label        hook::listen (' app_init ');//Invalid App::init by default        ();  the module name  controller name  and method name are found through the URL        //Application start tag        hook::listen (' App_begin ');  Static cache page, default off         //session Initialization        if (!IS_CLI) {            session (C (' session_options '));  Session initialization According to session_options in the configuration file        }        //Record application initialization time        G (' inittime ');  Do record        app::exec ();  Know for the controller and method name  and run        //apply end tag        hook::listen (' app_end ');//default off  This function is to display some SQL execution, response time and other parameters of Web page request        return;    }

ThinkPHP3.2 loading Process (iv)