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Hanane Kacemi
Hanane Kacemi

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100 days of code - Day 1

#100daysofcode #todayilearned #challenge #php

Hello,
I decided to participate on "100DaysOfCode" challenge. To start I'm choosing "Create your own PHP Framework" tutorial, available on symfony website : https://symfony.com/doc/current/create_framework/index.html

In the introduction section of this tutorial they asked a question : "why would someone choose to create its own framework instead of using existing ones ?

well, for me, the main raison is : I want to learn more about low level architecture of frameworks.

So, What do we need for this mission :D ?

  • PHP 7.4 or later
  • web server : nginx, apache, php's built in server (I am unsing xampp)
  • OOP knowledge
  • Composer to install third-party component

Part 1 : Http Foundation Component :

When we create a web app, we assume that we will have a communication between a client and the server, the client sends a request and the server returns a response.

In PHP, the request is represented by global variables ($_GET, $_POST, $_FILE, $_COOKIE, $_SESSION…) and the response is generated by functions (echo, header, setcookie, …).

HttpFoundation component replaces these default PHP global variables and functions by an object-oriented layer.

we can add this component to our project via :
composer require symfony/http-foundation

There are two main classes : Request and Response

These are some main functions of Request Class :

$request->getPathInfo(); // the URI being requested (e.g. /about) minus any query parameters // retrieve GET and POST variables respectively $request->query->get('foo'); $request->request->get('bar', 'default value if bar does not exist'); // retrieve SERVER variables $request->server->get('HTTP_HOST'); // retrieves an instance of UploadedFile identified by foo $request->files->get('foo'); // retrieve a COOKIE value $request->cookies->get('PHPSESSID'); // retrieve an HTTP request header, with normalized, lowercase keys $request->headers->get('host'); $request->headers->get('content-type'); $request->getMethod(); // GET, POST, PUT, DELETE, HEAD $request->getLanguages(); // an array of languages the client accepts
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And below are those of Response Class :

$response = new Response(); $response->setContent('Hello world!'); $response->setStatusCode(200); $response->headers->set('Content-Type', 'text/html'); // configure the HTTP cache headers $response->setMaxAge(10);
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That's all for today,
Feel free to comment for any suggestions/questions
Have a nice day

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