Can we get cookie that create with PHP using Javascript? I have create $_COOKIE with PHP script and want call in html browser. If the cookie exist it will stay on the page but if not it will redirect to login page. Can someone help me?

I don't know very much about this, but this link I found on Google may be helpful to you: http://techpatterns.com/downloads/ja...pt_cookies.php

Probably. As long as the javascript comes from the same domain - sometimes and folder - that created the cookie, there shouldn't be any problem.

While this might look like shameless self promotion, have a look at my blog, the one in my signature. You don't need to spend more than a minute or two looking at it in the browser ( just hit the [more] and [...] links ), but look into the javascript code. There's a lot that happens in the browser based on cookies. I'm not doing exactly what you want to - redirection based on the absence of a cookie - but I change properties on the current page based on cookies and their values when they exist. You'd just have to change the x.style.y = z to document.location = login-page.php or something like that.

That said, you probably don't want to build your authentication mechanism using cookies, because they're pretty easy to spoof.

it's much simpler to redirect server side if the cookie doesn't exist.

That said, you probably don't want to build your authentication mechanism using cookies, because they're pretty easy to spoof.

What are you supposed to use then? Session variables?

Certainly

if (!$_session["logged_in"]) {
header("login.php");
}

If you want a "Remember me" feature then you would have to use cookies, ensuring that you encode the username in the cookie (and don't call it user ) so the casual "cracker" (not hacker) has a bit more work to do to decipher it.