qVpD9Tbb

1/**
2 * 
3 * User login blocking without need for dedicated plugin.
4 * 
5 */
6function wpgenie_check_attempted_login( $user, $username, $password ) {
7
8    
9    $blocked = array( 1, 2, 3 ); // user IDs you want to block
10
11
12    if ( is_a ( $user, 'WP_User' ) ) {
13
14        if ( !in_array( $user->ID, $blocked) ) {
15                
16            return $user;
17
18        } else {
19
20            $user = new WP_Error(
21                'account_locked',
22                'Your account has been locked. Please contact us for assistance.'
23            );
24            
25            return $user;
26        }
27    }     
28}
29
30add_filter('authenticate', 'wpgenie_check_attempted_login', 100, 3);