How to handle the user logout in browser multiple tab?

Question

I am using codeigniter session to store user login. When user opens in multiple tab, on logout in one tab , I want the page to be auto refreshed while user visiting the othe

Answer 1

Just tested it out, and the easiest way I can see (which seems to work in Chrome at least, but may need further testing) is setting a cookie.

On logout do something like setcookie('loggedout',1). You'll also need to do the opposite on login - unset($_COOKIE['loggedout'])

Then you just need some simple Javascript...

function readCookie(name) {
    var nameEQ = escape(name) + "=";
    var ca = document.cookie.split(';');
    for (var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) === ' ') c = c.substring(1, c.length);
        if (c.indexOf(nameEQ) === 0) return unescape(c.substring(nameEQ.length, c.length));
    }
    return null;
}
window.setInterval(function() {
    if(readCookie('loggedout')==1) {
        window.location.assign('loggedout.html')
        //Or whatever else you want!
    }
},1000)

That'll check each second to see if the cookie is set. Magic.