logging out

[runrunforest]

Hi,

How would i place the log out link in every pages just when the user has logged in?

[decowski]

Hi,

How would i place the log out link in every pages just when the user has logged in?

It depends how you implement your authentication system. Is there a session variable telling if the user is logged in? If so, then check if the variable is set and if it is then display a log out link. If it's not then display a log in link.

[runrunforest]

There is session variable.

I know the logic of doing this, just the actual technique is unknown.

[AnthonySterling]

Sure, something like this should do it.

//--> Anywhere on page.
<?php
session_start();
if($_SESSION['auth']['loggedIn'] == true){
    echo '<a href="http://www.yourserver.com/logOut.php" title="Log Out">Log Out</a>';
}
?>

//--> logOut.php
<?php
session_start();
if(isset($_SESSION['auth']))
{
    unset($_SESSION['auth']);
}
header('Location: http://www.yourserver.com/');
exit;
?>

[runrunforest]

what about logout link? I need the link to be available in every pages.

This probably involves some css, isn't it ?

Further more, I need the link to disappear as long as user logged out

[AnthonySterling]

The logout link will only show if the user is logged in, just place the top bit of code on each page/template you want the logout link to be displayed.

[TeNDoLLA]

I am not sure if this is anymore any help but ill post it anyway in case op wanted to see how the link is handled using eg. GET method.

// The link and when clicked it will set variable called $_GET['logout']
echo '<a href="http://www.yourserver.com/'. $_SERVER['SCRIPT_NAME'] .'?logout">Logout</a>';

// And then you check if $_GET['logout'] is set or not and if yes you set your 
// logout/auth variable to something that you use to check if user is logged or not.
if (isset($_GET['logout']))
{
    $_SESSION['logged'] = false;
} 

$_SERVER['SCRIPT_NAME'] references to the page you are at the current moment. And CSS has nothing to do with making logout/login script in php.

[runrunforest]

The logout link will only show if the user is logged in, just place the top bit of code on each page/template you want the logout link to be displayed.

I put the echo in tamplate, it shows up even user didnt log in. Though i have set the condition like this and put it on the top of template.
<?php session_start(); ?>
<?php if(isset($_SESSION['email')) {} ?>