<a href="<?php echo wp_logout_url( home_url() ); ?>">Logout</a>
// on your theme -> functions.php -->
add_action('wp_logout','auto_redirect_after_logout');
function auto_redirect_after_logout(){
wp_safe_redirect( home_url() );
exit;
}
<a href="<?php echo wp_logout_url( get_permalink() ); ?>" title="Logout">Logout</a>
<?php if (is_user_logged_in()) : ?>
<a href="<?php echo wp_logout_url(get_permalink()); ?>">Logout</a>
<?php endif;?>
wp_destroy_current_session();
wp_clear_auth_cookie();
wp_set_current_user( 0 );
wp_logout()