PHP Exercise : Set a cookie to store login detail
Write a program to store the username in cookie and check whether the user have successfully login or not.
Solution
Cookies are pieces of content that are sent to a user's web browser. To set a cookie, we must call the setcookie() function before sending any other content to the browser, because a cookie is actually part of the header information.
Syntax of setcookie()setcookie(name, value, expire, path, domain, secure, httponly);The following example demonstrates how to store the username in a cookie and check whether that user successfully login or not -
<?php
$submitted = isset($_POST['username']) && isset($_POST['password']);
if($submitted) {
setcookie('username', $_POST['username']);
}
?>
<!Doctype>
<html>
<head>
<title>User Authentication</title>
</head>
<body>
<?php if ($submitted): ?>
<p>Hello <b><?php echo $_POST['username']; ?></b></p>
<?php else: ?>
<p>Login First</p>
<?php endif; ?>
</body>
</html>
In the above code, we have set a variable to know if we submitted a login or not, and sets the username in cookie.
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