if ( !empty( $_POST['newuser'] ) ) {
$update = 'adduser';
$newuser = $_POST['newuser'];
- $userid = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM " . $wpdb->users . " WHERE user_login = %s", $newuser ) );
- if ( $userid ) {
- $blog_prefix = $wpdb->get_blog_prefix( $id );
- $user = $wpdb->get_var( "SELECT user_id FROM " . $wpdb->usermeta . " WHERE user_id='$userid' AND meta_key='{$blog_prefix}capabilities'" );
- if ( $user == false )
- add_user_to_blog( $id, $userid, $_POST['new_role'] );
+ $user = get_user_by( 'login', $newuser );
+ if ( $user && $user->exists() ) {
+ if ( ! is_user_member_of_blog( $user->ID, $id ) )
+ add_user_to_blog( $id, $user->ID, $_POST['new_role'] );
else
$update = 'err_add_member';
} else {