State

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HTTP is a stateless and forgetful protocol. To save state in PHP, cookies and sessions are used.

</aside>

Cookies

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Cookies store all information on client

</aside>

<?php

    if (isset($_COOKIE["count"])) {
        $value = $_COOKIE["count"] + 1;
    } else {
        $value = 1;
    }
    setcookie("count", $value, time() + 5, "/");

?>

<html>

<head>
	<title>Testing Cookies</title>
</head>

<body>
	<h1>Cookies</h1>
	<p>Your visit count is <?php echo $value; ?></p>
</body>

</html>

Sessions

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Session data is stored on server side in temp folder
Session ID PHPSESSID is stored as a cookie on client </aside>

<?php
    session_start();

    if (isset($_SESSION["count"])) {
        $_SESSION["count"]++;
    } else {
        $_SESSION["count"] = 1;
    }

?>

<html>

<head>
	<title>Testing Cookies</title>
</head>

<body>
	<h1>Cookies</h1>
	<p>Your visit count is <?php echo $_SESSION["count"]; ?></p>
</body>

</html>

Example of session data stored on /var/lib/php/sessions in Ubuntu (temp in XAMPP root)

count|i:19;

Laravel

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What is a framework?

Starting point for a project with minimum requirements such as authentication, functioning as a hello world for your own project.

</aside>

MVC (Model View Controller)

Model: Manages the data and business logic (e.g., fetching from a database).
View: Handles what the user sees (UI).
Controller: Connects the Model and View, processing user input and updating them accordingly.

Composer

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Composer is a PHP dependency manager using https://packagist.com repository

</aside>