当他们使用facebook连接时，无法从网站注销用户

Question

Ok i made a code where i connect the user to my database and then i set as login to that user, if the email is already in the database i just Login the user...

The problem is logout button is not working.. i have tried.

session_start(); 
session_destroy();

On the Logout, but as soon as is redirected to the index page, (i think is loged in again)

how can i avoid this..

EDIT: i dont want the user to be loged out from facebook. just loged out from my site

This is my code.

<?php
if ($userId) {
 //
 // already logged? show some data
 $userInfo = $facebook->api('/' + $userId);





 if (isset($userInfo['email']))

{ include "facebookregister.php"; } else { echo "no hay permisos de facebook"; }

} else {
 //
 // use javaascript api to open dialogue and perform
 // the facebook connect process by inserting the fb:login-button
 ?>
 <div id="fb-root"></div>
 <fb:login-button scope='email,user_birthday'></fb:login-button>
 <?php
}
?>
 <script>
 window.fbAsyncInit = function() {
 FB.init({
 appId : <?=YOUR_APP_ID?>,
 status : true,
 cookie : true,
 xfbml : true,
 oauth : true,
 });



FB.Event.subscribe('auth.login', function(response) {
 // ------------------------------------------------------
 // This is the callback if everything is ok
 window.location.reload();
 });
 };

(function(d){
 var js, id = 'facebook-jssdk'; if (d.getElementById(id)) {return;}
 js = d.createElement('script'); js.id = id; js.async = true;
 js.src = "//connect.facebook.net/en_US/all.js";
 d.getElementsByTagName('head')[0].appendChild(js);
 }(document));
</script>

And the logout.

function logout_action()
    {
        $srv_nms=BASE;
        $srv_nms=str_replace("http://","",$srv_nms);
        $srv_nms=str_replace("https://","",$srv_nms);
        $srv_nms=str_replace("www.","",$srv_nms);


        $srv_pats=$srv_nms;

        $srv_nms_arr=explode("/",$srv_nms);
        $srv_nms=$srv_nms_arr[0];


        $srv_pats=str_replace($srv_nms."/","",$srv_pats);


        setcookie(COOKIE_LOGINID,"",0,"/".$srv_pats,$srv_nms);
        setcookie(COOKIE_USERNAME,"",0,"/".$srv_pats,$srv_nms);
        setcookie(COOKIE_PASSWORD,"",0,"/".$srv_pats,$srv_nms);

    session_start(); 
session_destroy();

        header("Location: ".$this->make_url("user/login/l"));
        die;
    }

Answer 1

in logout action you are logging out by session_destroy which will clear session in your server only, not in api.

so you need make $facebook->api logout request to logout from facebook completly. NOTE: refer api documentation for logout request.