I am using the latest version of PHP SDK for Facebook (3.2.1)
I was wondering, when logging out using the function provided in base_facebook.php from the sdk, if there was a way to stop it from actually logging out of facebook, but still deleting the session for the website application?
Below is the logout function from base_facebook.php
/**
* Get a Logout URL suitable for use with redirects.
*
* The parameters:
* - next: the url to go to after a successful logout
*
* @param array $params Provide custom parameters
* @return string The URL for the logout flow
*/
public function getLogoutUrl($params=array()) {
session_destroy();
return $this->getUrl(
'www',
'logout.php',
array_merge(array(
'next' => $this->getCurrentUrl(),
'access_token' => $this->getUserAccessToken(),
), $params)
);
}
and then my logout url is: $logoutUrl = $facebook->getLogoutUrl();then obviously using a anchor tag to logout: <a href="<?php echo $logoutUrl; ?>">Logout</a>
Thank you.
Dont use $logoutUrl.
<li><a href="?action=logout">Logout</a></li>
And in your php code add this. This will only logout you from your app .
if(isset($_GET['action']) && $_GET['action'] === 'logout'){
$facebook->destroySession();
}
Create a file logout.php
<?php
session_start(); //start session
$_SESSION = array(); //clear session array
session_destroy(); //destroy session
?>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Log Out</title>
</head>
<body>
<p>You have successfully logged out!</p>
<p>Return to the <a href="....index.php">Home</a> page</p>
</body>
</html>
And change your code where you check user status
if ($user) {
$params = array( 'next' => 'http://....../logout.php' );
$logoutUrl = $facebook->getLogoutUrl($params);
} else {
$loginUrl = $facebook->getLoginUrl();
}
Use $logoutUrl for logout the user.
<?php if ($user): ?>
<?php echo "Welcome, ".$me['first_name']. " " .$me['last_name'] ." <br />";
echo "Id: " . $me['id'] ." <br />"; ?>
<a href="<?php echo $logoutUrl; ?>"> Logout </a> <br />
<?php else: ?>
<a href="<?php echo $loginUrl; ?>">
<img src="http://static.ak.fbcdn.net/rsrc.php/zB6N8/hash/4li2k73z.gif"> </a>
<?php endif ?>
Hope it will work fine
来源：https://stackoverflow.com/questions/17931402/php-sdk-facebook-logout