PHP记住我的Cookie问题

Question

I have a login form with a remember me check box that sets the user email in a cookie that I then want to auto fill in the username the next time they log in. Also, when I use firbug it shows the path of the cookie in the directory where the login.php page is. The index.php is not in the same directory as the login.php directory.

So I have index.php page with the login form. When the user submits the form it calls login.php which has this piece of code:

if (isset($_POST['email'])) {
        if (isset($_POST['remember'])) {
            setcookie("email", $_POST['email'], time() + 9999999);
            $_COOKIE['email'] = $userEmail;
        }
    }

and then on the index.php code I have this code:

$userEmail = $_COOKIE['email'];

and then I use the $userEmail variable to autofill in the username field like this:

<div class="form-group <?php if(isset($userEmail)) { echo $addClass; }?>" >
    <input type="email" name="email" id="email" class="form-control input-lg" placeholder="Email Address" value="<?php if(isset($userEmail)) { echo $userEmail; } ?>">
</div>

I can see that the cookie is being set, but when I try to echo the cookie (email address) it displays nothing.

I know that I am probably not doing this in the best way possible, but it used to work and now it stopped working. Any suggestions on what I am doing wrong?

EDIT: When I use Firebug I see this in the Cookies tab:

• Name: email
• Value: the email address
• Path: this is a different path than the current page i'm on

When I var_dump($_COOKIE['email']) it show NULL

Answer 1

if (isset($_POST['email'])) {
        if (isset($_POST['remember'])) {
            setcookie("email", $_POST['email'], time() + 9999999);
            $_COOKIE['email'] = $userEmail;
        }
    }

look at the line $_COOKIE['email'] = $userEmail; this should be $userEmail = $_COOKIE['email']; because at that point $userEmail hasn't been given a value so you are essentially setting $_COOKIE['email'] to a null value.

either that or you need to set $_COOKIE['email'] = $_POST['email'];

Answer 2

I think :

if(isset($userEmail)) :

should be :

if(isset($userEmail) && !empty($userEmail) ) 

Answer 3

Thanks for all the answers, but this change has fixed the issue. It was setting the path of the cookie to the directory where the login.php page was so I had to set the path of the cookie for all directories.

I changed this:

if (isset($_POST['email'])) {
    if (isset($_POST['remember'])) {
        setcookie("email", $_POST['email'], time() + 9999999);
        $_COOKIE['email'] = $userEmail;
    }
}

to this:

if (isset($_POST['email'])) {
        if (isset($_POST['remember'])) {
            $userEmail = $_POST['email'];
            setcookie("email", $userEmail, time() + 9999999, "/");
        }
    } 

I added "/" to the setcookie