Assign cookie value into textbox

Question

1.00/5 (1 vote)

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I have this code below I am trying to undestand session and cookie things.I am wondering How to fill username and password fields based on cookie value after log out

What I have tried:

<?php
 session_start();
 ob_start();

 if (isset($_COOKIE['name']) and isset($_COOKIE['pass'])) {
     $c_name = $_COOKIE['name'];
     $c_pass = $_COOKIE['pass'];
     echo "<script>
   document.getElementById('u_name2).val='$c_name';
    </script>";
 }

?>




<?php


if (isset($_SESSION['login'])) {
    header('location:welcome.php');
} else {
    if (isset($_POST['submit'])) {
        $name = $_POST['username'];
        $pass = $_POST['password'];

        $db = new PDO('mysql:host=localhost;dbname=testing;charset=utf8', 'root', '');
        $query = $db->prepare('select * from users where username=? and password=?');
        $query->execute([$name, $pass]);
        $count = $query->rowCount();
        if ($query->rowCount()) {
            $_SESSION['login'] = true;
            $_SESSION['username'] = $name;
            if (isset($_POST['remember'])) {
                setcookie('name', $name, time() + 60 * 60 * 6);
                setcookie('pass', $pass, time() + 60 * 60 * 6);
            }
            header('location:welcome.php');
        }
    } else {
        ?>
<form action="" method="post">
UserName <input type="text" name="username" id="u_name"><br>
 Password   : <input type="text" name="password" id="u_pass"><br>
 Remember Me :<input type="checkbox" name="remember" >
 <br>
 <input type="submit" name="submit"><br>



</form>
    <?php
    }
}

?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>

</body>
</html>
<?php

Posted 22-Nov-18 5:50am

Member 3722539

Updated 23-Nov-18 2:25am

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Richard Deeming · Accepted Answer · 2018-11-23T02:26:00

Simple: Don't.

NEVER store the user's credentials in a cookie. That would be a serious security breach, and would most likely result in you or your company having to pay a hefty fine.

Every browser includes a secure password manager built-in. This will let the user choose to remember and auto-fill their credentials. Don't try to replicate or override that in your code.

Troy Hunt: How to build (and how not to build) a secure “remember me” feature[^]

On a similar note, you're storing passwords in plain text. Don't do that!
Secure Password Authentication Explained Simply[^]
Salted Password Hashing - Doing it Right[^]

PHP even includes built-in functions to help you do the right thing:
PHP: password_hash[^]
PHP: password_verify[^]