CODEWITHSUNDEEP
php
user2388554
user2388554

Reputation:

PHP cookie set in second refresh page

i want to use cookie in web page and i want to use it for save any optional variables. but after use setcookie and refresh page isset() could not detect, i must be many refresh page for use it,

i cant use it in first refresh or visit page.

PHP:

setcookie("user", "Alex Porter", time()+3600);
if (isset($_COOKIE["user"]))
  echo "Welcome " . $_COOKIE["user"] . "!<br>";
else
  echo "Welcome guest!<br>";

//unset($_COOKIE['user']);
//setcookie('user', '', time() - 3600);

RESULT:

after save and refresh page

Welcome guest!

second refresh :

Welcome Alex Porter

Upvotes: 7

Views: 19383

Answers (5)

Kevin
Kevin

Reputation: 6701

Well, there is nothing wrong in this. The first time you refresh, you actually run the script to set the cookie. So, it executes the else statement.

When you refresh it the second time, the isset() function returns true and the if statement gets executed.

Here is a pictorial description:

enter image description here

However, there is a problem with your script. Refreshing your page everytime updates the cookie time to 3600 seconds. So, you need to set the cookie only when there is no cookie set on the user's browser like this:

if (isset($_COOKIE["user"]))
  echo "Welcome " . $_COOKIE["user"] . "!<br>";
else
{
  echo "Welcome guest!<br>";
  setcookie("user", "Alex Porter", time()+3600);
}

Upvotes: 6

Maxim Kumpan
Maxim Kumpan

Reputation: 2635

The $_COOKIE data is read from the client's request data, and is not written immediately by setCookie(). This is normal behavior and should be incorporated into your program flow.

If you want the cookie data to be immediately available in your case, you might try something like this:

if (isset($_COOKIE["user"]))
    echo "Welcome " . $_COOKIE["user"] . "!<br>";
else {
    $user = "Alex Porter";
    setcookie("user", $user, time()+3600);
    echo "Welcome $user!<br>";
}

Upvotes: 1

Christian P.
Christian P.

Reputation: 4884

When you set a cookie, it is sent to the browser. The next time the browser then sends a request for a page, it sends the cookie information back and the page can make use of it.

  1. Browser visits page (login or something similar), and sends NO cookie data.
  2. Server sets cookie (which means including them in the header of the HTTP reply).
  3. Browser visits page and sends back cookie data.
  4. Server can see cookie data and make use of it.

To fix it, redirect the user to the page where you want to display the data after the cookie has been set, instead of simply displaying the page. This way you can make use of the cookie data.

Upvotes: 10

Robert
Robert

Reputation: 20286

Cookie is set to a specific path and domain. You should change setcookie() to

setcookie ("user", "Alex Porter", time()+3600, "/", "youdomain.com");

If set to '/', the cookie will be available within the entire domain(youdomain.com).

Cookie will be visible after page refresh.

Your code can be simplifed as well:

 echo "Welcome " . isset($_COOKIE["user"]) ? $_COOKIE["user"] : "guest" . "!<br>";

Upvotes: 1

hek2mgl
hek2mgl

Reputation: 158100

I guess you want something like this:

if (isset($_COOKIE["user"]))
  echo "Welcome " . $_COOKIE["user"] . "!<br>";
else {
  echo "Welcome guest!<br>";
  setcookie("user", "Alex Porter", time()+3600);
}

Upvotes: 0

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