Вивчайте Working with $_REQUEST, $_SESSION, and $_COOKIE

PHP provides several built-in variables known as superglobals that allow you to access and manage data throughout your application. Among these, $_REQUEST, $_SESSION, and $_COOKIE are especially useful for handling user data across different pages and requests, but each serves a distinct purpose.

session_cookie_example.php


              123456789101112131415161718192021222324
            
<?php
// Start the session
session_start();

// Set a session variable
$_SESSION['user'] = 'Alice';

// Set a cookie that expires in 1 hour
setcookie('favorite_color', 'blue', time() + 3600);

// Retrieve and display the session variable
if (isset($_SESSION['user'])) {
    echo "Session user: " . $_SESSION['user'] . "<br>";
} else {
    echo "No session user found.<br>";
}

// Retrieve and display the cookie value
if (isset($_COOKIE['favorite_color'])) {
    echo "Favorite color from cookie: " . $_COOKIE['favorite_color'] . "<br>";
} else {
    echo "No favorite color cookie found.<br>";
}
?>

To summarize:

Use $_REQUEST to access incoming data from GET, POST, or COOKIE, but be cautious about the source;
Use $_SESSION to store data securely on the server for a single user during their session;
Use $_COOKIE to store small pieces of data on the client for longer-term persistence across sessions.

Все було зрозуміло?

Дякуємо за ваш відгук!

Секція 3. Розділ 3

Запитати АІ

Запитайте про що завгодно або спробуйте одне із запропонованих запитань, щоб почати наш чат

Suggested prompts:

Can you give examples of how to use each of these superglobals in PHP?

What are the security considerations when using $_REQUEST, $_SESSION, and $_COOKIE?

When should I use $_SESSION instead of $_COOKIE?

Свайпніть щоб показати меню

session_cookie_example.php


              123456789101112131415161718192021222324
            
<?php
// Start the session
session_start();

// Set a session variable
$_SESSION['user'] = 'Alice';

// Set a cookie that expires in 1 hour
setcookie('favorite_color', 'blue', time() + 3600);

// Retrieve and display the session variable
if (isset($_SESSION['user'])) {
    echo "Session user: " . $_SESSION['user'] . "<br>";
} else {
    echo "No session user found.<br>";
}

// Retrieve and display the cookie value
if (isset($_COOKIE['favorite_color'])) {
    echo "Favorite color from cookie: " . $_COOKIE['favorite_color'] . "<br>";
} else {
    echo "No favorite color cookie found.<br>";
}
?>

To summarize:

Use $_REQUEST to access incoming data from GET, POST, or COOKIE, but be cautious about the source;
Use $_SESSION to store data securely on the server for a single user during their session;
Use $_COOKIE to store small pieces of data on the client for longer-term persistence across sessions.

Все було зрозуміло?

Дякуємо за ваш відгук!

Секція 3. Розділ 3