CodeIgniter 4.3の処理の流れをまとめました。

CodeIgniter 4.3 Process Flow

public/index.php

check PHP version

define constant FCPATH

instantiate Config\Paths

• Config\Paths

  • $systemDirectory
  • $appDirectory
  • $writableDirectory
  • $testsDirectory
  • $viewDirectory

load system/bootstrap.php

• system/bootstrap.php

  • define constants for directory paths

    • APPPATH
    • ROOTPATH
    • SYSTEMPATH
    • WRITEPATH
    • TESTPATH

  • load Config/Constants.php

  • load Common.php
  • load Autoloader
  • load Services

  • Services::autoloader()

    • instantiate Autoloader
    • initialize()
    • register()

  • autoload helpers

    • URL helper

  • load Composer autoloader

instantiate DotEnv

• load .env file

Services::codeigniter()

• instantiate Config\App
• instantiate CodeIgniter

initialize CodeIgniter

• CodeIgniter::initialize()

  • detect Environment
  • load Environment bootstrap

  • Services::exceptions()

    • Services::request()

      • Services::incomingrequest()

        • Services::uri()
        • instantiate UserAgent

        • instantiate Request

          • IncomingRequest::__construct()

            • detectURI()

              • update superglobals

                • update $_SERVER
                • update $_GET

              • update URI object

              • set path in Request

            • detectLocale()

              • if $negotiateLocale is true

                • get lang from content negotiation

                • setLocale()

                  • set locale in Request
                  • set default locale (Locale::setDefault())

      • Services::response()

        • instantiate Response

    • instantiate Exception

  • Exception::initialize()

    • set Exception/Error handler

  • check missing required PHP extensions

  • set default locale (Locale::setDefault())

    • Config\App:$defaultLocale

  • set default timezone

  • initialize Kint

• CodeIgniter::setContext()

run CodeIgniter

• CodeIgniter::run()

  • Services::createRequest()
  • force secure access
  • spoof request method
  • Event pre_system
  • check Page Cache

  • CodeIgniter::handleRequest()

    • tryToRouteIt()

      • instantiate Routes
      • instantiate Router
      • get Controller and method name

      • if route contains locale

        • Request::setLocale()

          • set locale in Request
          • set default locale (Locale::setDefault())

      • get Controller Filters

    • enable Controller Filters

    • run before Filters

    • run Controller

      • run Closure controller

      • or

        • instantiate Controller
        • Event post_controller_constructor
        • run Controller method

    • gather output

    • run after Filters

      • debug toolbar

    • send response

    • Event post_system
    • return Response object

関連

• CodeIgniter 4.1の処理の流れ