DEMO of Setting PHP cookies by using a form input text box

Create the cookie before sending HTML

Cookie headers must be sent before page output.

<?php
setcookie('Plus2netCookie', 'plus2net.com', [
    'expires' => time() + 3600,
    'path' => '/',
    'secure' => true,
    'httponly' => true,
    'samesite' => 'Lax',
]);
?>

Cookie settings: Use Secure on HTTPS sites, HttpOnly when JavaScript does not need the cookie, and choose SameSite according to the cross-site behavior your application requires.

HTML code

<form method=post action=cookies_redirect.php>
Enter Your Name <input type=text name=name class='form-control'> 
<input type=submit value=Next class='btn btn-danger'>
</form>

Code for page cookies_redirect.php

<?php
$name = trim((string) filter_input(INPUT_POST, 'name', FILTER_UNSAFE_RAW));

if ($name !== '' && mb_strlen($name) <= 80) {
    setcookie('Plus2netCookie', $name, [
        'expires' => time() + 3600,
        'path' => '/',
        'secure' => true,
        'httponly' => true,
        'samesite' => 'Lax',
    ]);
    header('Location: cookies_t2.php');
    exit;
}
?>

Tutorial on PHP Cookies
DEMO of Data Array as Cookies Reading Cookies Deleting Cookies

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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Create a Cookie in PHP

Create the cookie before sending HTML

Subhendu Mohapatra