Tip of the day. How to avoid multiple logins at a time

[vinz98]

simply add this fine piece of code to your functions.php (preferrably in your child theme)

 

COPY CODE

/*
Plugin name: Single user login
Plugin URI: 
Description:
Author: Ben May
Author URI: 
Version: 0.1
*/

if( !class_exists( 'WPSingleUserLoggin' ) )
{
    class WPSingleUserLoggin
    {
        private $session_id; 

        function __construct()
        {
            if ( ! session_id() )
                session_start();

            $this->session_id = session_id();

            add_action( 'init', array( $this, 'init' ) );
            add_action( 'wp_login', array( $this, 'wp_login' ), 10, 2 );
        }

        function init()
        {
            if( ! is_user_logged_in() )
                return;

            $stored_sess_id = get_user_meta( get_current_user_id(), '_wp_single_user_hash', true );

            if( $stored_sess_id != $this->session_id )
            {
                wp_logout(); 
                wp_redirect( wp_login_url() );
                exit;
            }
        }
        function wp_login( $user_login, $user )
        {
            update_user_meta( $user->ID, '_wp_single_user_hash', $this->session_id );
            return;
        }
    }
    new WPSingleUserLoggin();
}

[vinz98]

I am sorry somewhere the copy [aste went wrong. admin cab you please put this right for me?

/*
Plugin name: Single user login
Plugin URI:
Description:
Author: Ben May
Author URI:
Version: 0.1
*/

if( !class_exists( ‘WPSingleUserLoggin’ ) )
{
class WPSingleUserLoggin
{
private $session_id;

function __construct()
{
if ( ! session_id() )
session_start();

$this->session_id = session_id();

add_action( ‘init’, array( $this, ‘init’ ) );
add_action( ‘wp_login’, array( $this, ‘wp_login’ ), 10, 2 );
}

function init()
{
if( ! is_user_logged_in() )
return;

$stored_sess_id = get_user_meta( get_current_user_id(), ‘_wp_single_user_hash’, true );

if( $stored_sess_id != $this->session_id )
{
wp_logout();
wp_redirect( wp_login_url() );
exit;
}
}
function wp_login( $user_login, $user )
{
update_user_meta( $user->ID, ‘_wp_single_user_hash’, $this->session_id );
return;
}
}
new WPSingleUserLoggin();
}

[vinz98]

Question: How can I send the user which has been logged out to the homepage instead of the wp login page?

wp_redirect( wp_login_url() );

What do I put in the piece wp_login_url to get sent to the homepage?

this? wp_redirect( home_url() );

[Author]

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