source: branches/6.1/wp-admin/network/users.php

<?php
/**
 * Multisite users administration panel.
 *
 * @package WordPress
 * @subpackage Multisite
 * @since 3.0.0
 */

/** Load WordPress Administration Bootstrap */
require_once __DIR__ . '/admin.php';

if ( ! current_user_can( 'manage_network_users' ) ) {
        wp_die( __( 'Sorry, you are not allowed to access this page.' ), 403 );
}

if ( isset( $_GET['action'] ) ) {
        /** This action is documented in wp-admin/network/edit.php */
        do_action( 'wpmuadminedit' );

        switch ( $_GET['action'] ) {
                case 'deleteuser':
                        if ( ! current_user_can( 'manage_network_users' ) ) {
                                wp_die( __( 'Sorry, you are not allowed to access this page.' ), 403 );
                        }

                        check_admin_referer( 'deleteuser' );

                        $id = (int) $_GET['id'];
                        if ( $id > 1 ) {
                                $_POST['allusers'] = array( $id ); // confirm_delete_users() can only handle arrays.

                                // Used in the HTML title tag.
                                $title       = __( 'Users' );
                                $parent_file = 'users.php';

                                require_once ABSPATH . 'wp-admin/admin-header.php';

                                echo '<div class="wrap">';
                                confirm_delete_users( $_POST['allusers'] );
                                echo '</div>';

                                require_once ABSPATH . 'wp-admin/admin-footer.php';
                        } else {
                                wp_redirect( network_admin_url( 'users.php' ) );
                        }
                        exit;

                case 'allusers':
                        if ( ! current_user_can( 'manage_network_users' ) ) {
                                wp_die( __( 'Sorry, you are not allowed to access this page.' ), 403 );
                        }

                        if ( isset( $_POST['action'] ) && isset( $_POST['allusers'] ) ) {
                                check_admin_referer( 'bulk-users-network' );

                                $doaction     = $_POST['action'];
                                $userfunction = '';

                                foreach ( (array) $_POST['allusers'] as $user_id ) {
                                        if ( ! empty( $user_id ) ) {
                                                switch ( $doaction ) {
                                                        case 'delete':
                  ��                                             if ( ! current_user_can( 'delete_users' ) ) {
                                                                        wp_die( __( 'Sorry, you are not allowed to access this page.' ), 403 );
                                                                }

                                                                // Used in the HTML title tag.
                                                                $title       = __( 'Users' );
                                                                $parent_file = 'users.php';

                                                                require_once ABSPATH . 'wp-admin/admin-header.php';

                                                                echo '<div class="wrap">';
                                                                confirm_delete_users( $_POST['allusers'] );
                                                                echo '</div>';

                                                                require_once ABSPATH . 'wp-admin/admin-footer.php';
                                                                exit;

                                                        case 'spam':
                                                                $user = get_userdata( $user_id );
                                                                if ( is_super_admin( $user->ID ) ) {
                                                                        wp_die(
                                                                                sprintf(
                                                                                        /* translators: %s: User login. */
                                                                                        __( 'Warning! User cannot be modified. The user %s is a network administrator.' ),
                                                                                        esc_html( $user->user_login )
                                                                                )
                                                                        );
                                                                }

                                                                $userfunction = 'all_spam';
                                                                $blogs        = get_blogs_of_user( $user_id, true );

                                                                foreach ( (array) $blogs as $details ) {
                                                                        if ( get_network()->site_id != $details->userblog_id ) { // Main blog is not a spam!
                                                                                update_blog_status( $details->userblog_id, 'spam', '1' );
                                                                        }
                                                                }

                                                                $user_data         = $user->to_array();
                                                                $user_data['spam'] = '1';

                                                                wp_update_user( $user_data );
                                                                break;

                                                        case 'notspam':
                                                                $user = get_userdata( $user_id );

                                                                $userfunction = 'all_notspam';
                                                                $blogs        = get_blogs_of_user( $user_id, true );

                                                                foreach ( (array) $blogs as $details ) {
                                                                        update_blog_status( $details->userblog_id, 'spam', '0' );
                                                                }

                                                                $user_data         = $user->to_array();
                                                                $user_data['spam'] = '0';

                                                                wp_update_user( $user_data );
                                                                break;
                                                }
                                        }
                                }

                                if ( ! in_array( $doaction, array( 'delete', 'spam', 'notspam' ), true ) ) {
                                        $sendback = wp_get_referer();
                                        $user_ids = (array) $_POST['allusers'];

                                        /** This action is documented in wp-admin/network/site-themes.php */
                                        $sendback = apply_filters( 'handle_network_bulk_actions-' . get_current_screen()->id, $sendback, $doaction, $user_ids ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

                                        wp_safe_redirect( $sendback );
                                        exit;
                                }

                                wp_safe_redirect(
                                        add_query_arg(
                                                array(
                                                        'updated' => 'true',
                                                        'action'  => $userfunction,
                                                ),
                                                wp_get_referer()
                                        )
                                );
                        } else {
                                $location = network_admin_url( 'users.php' );

                                if ( ! empty( $_REQUEST['paged'] ) ) {
                                        $location = add_query_arg( 'paged', (int) $_REQUEST['paged'], $location );
                                }
                                wp_redirect( $location );
                        }
                        exit;

                case 'dodelete':
                        check_admin_referer( 'ms-users-delete' );
                        if ( ! ( current_user_can( 'manage_network_users' ) && current_user_can( 'delete_users' ) ) ) {
                                wp_die( __( 'Sorry, you are not allowed to access this page.' ), 403 );
                        }

                        if ( ! empty( $_POST['blog'] ) && is_array( $_POST['blog'] ) ) {
                                foreach ( $_POST['blog'] as $id => $users ) {
                                        foreach ( $users as $blogid => $user_id ) {
                                                if ( ! current_user_can( 'delete_user', $id ) ) {
                                                        continue;
                                                }

                                                if ( ! empty( $_POST['delete'] ) && 'reassign' === $_POST['delete'][ $blogid ][ $id ] ) {
                                                        remove_user_from_blog( $id, $blogid, (int) $user_id );
                                                } else {
                                                        remove_user_from_blog( $id, $blogid );
                                                }
                                        }
                                }
                        }

                        $i = 0;

                        if ( is_array( $_POST['user'] ) && ! empty( $_POST['user'] ) ) {
                                foreach ( $_POST['user'] as $id ) {
                                        if ( ! current_user_can( 'delete_user', $id ) ) {
                                                continue;
                                        }
                                        wpmu_delete_user( $id );
                                        $i++;
                                }
                        }

                        if ( 1 === $i ) {
                                $deletefunction = 'delete';
                        } else {
                                $deletefunction = 'all_delete';
                        }

                        wp_redirect(
                                add_query_arg(
                                        array(
                                                'updated' => 'true',
                                                'action'  => $deletefunction,
                                        ),
                                        network_admin_url( 'users.php' )
                                )
                        );
                        exit;
        }
}

$wp_list_table = _get_list_table( 'WP_MS_Users_List_Table' );
$pagenum       = $wp_list_table->get_pagenum();
$wp_list_table->prepare_items();
$total_pages = $wp_list_table->get_pagination_arg( 'total_pages' );

if ( $pagenum > $total_pages && $total_pages > 0 ) {
        wp_redirect( add_query_arg( 'paged', $total_pages ) );
        exit;
}

// Used in the HTML title tag.
$title       = __( 'Users' );
$parent_file = 'users.php';

add_screen_option( 'per_page' );

get_current_screen()->add_help_tab(
        array(
                'id'      => 'overview',
                'title'   => __( 'Overview' ),
                'content' =>
                        '<p>' . __( 'This table shows all users across the network and the sites to which they are assigned.' ) . '</p>' .
                        '<p>' . __( 'Hover over any user on the list to make the edit links appear. The Edit link on the left will take you to their Edit User profile page; the Edit link on the right by any site name goes to an Edit Site screen for that site.' ) . '</p>' .
                        '<p>' . __( 'You can also go to the user&#8217;s profile page by clicking on the individual username.' ) . '</p>' .
                        '<p>' . __( 'You can sort the table by clicking on any of the table headings and switch between list and excerpt views by using the icons above the users list.' ) . '</p>' .
                        '<p>' . __( 'The bulk action will permanently delete selected users, or mark/unmark those selected as spam. Spam users will have posts removed and will be unable to sign up again with the same email addresses.' ) . '</p>' .
                        '<p>' . __( 'You can make an existing user an additional super admin by going to the Edit User profile page and checking the box to grant that privilege.' ) . '</p>',
        )
);

get_current_screen()->set_help_sidebar(
        '<p><strong>' . __( 'For more information:' ) . '</strong></p>' .
        '<p>' . __( '<a href="https://codex.wordpress.org/Network_Admin_Users_Screen">Documentation on Network Users</a>' ) . '</p>' .
        '<p>' . __( '<a href="https://wordpress.org/support/forum/multisite/">Support Forums</a>' ) . '</p>'
);

get_current_screen()->set_screen_reader_content(
        array(
                'heading_views'      => __( 'Filter users list' ),
                'heading_pagination' => __( 'Users list navigation' ),
                'heading_list'       => __( 'Users list' ),
        )
);

require_once ABSPATH . 'wp-admin/admin-header.php';

if ( isset( $_REQUEST['updated'] ) && 'true' == $_REQUEST['updated'] && ! empty( $_REQUEST['action'] ) ) {
        ?>
        <div id="message" class="updated notice is-dismissible"><p>
                <?php
                switch ( $_REQUEST['action'] ) {
                        case 'delete':
                                _e( 'User deleted.' );
                                break;
                        case 'all_spam':
                                _e( 'Users marked as spam.' );
                                break;
                        case 'all_notspam':
                                _e( 'Users removed from spam.' );
                                break;
                        case 'all_delete':
                                _e( 'Users deleted.' );
                                break;
                        case 'add':
                                _e( 'User added.' );
                                break;
                }
                ?>
        </p></div>
        <?php
}
?>
<div class="wrap">
        <h1 class="wp-heading-inline"><?php esc_html_e( 'Users' ); ?></h1>

        <?php
        if ( current_user_can( 'create_users' ) ) :
                ?>
                <a href="<?php echo esc_url( network_admin_url( 'user-new.php' ) ); ?>" class="page-title-action"><?php echo esc_html_x( 'Add New', 'user' ); ?></a>
                <?php
        endif;

        if ( strlen( $usersearch ) ) {
                echo '<span class="subtitle">';
                printf(
                        /* translators: %s: Search query. */
                        __( 'Search results for: %s' ),
                        '<strong>' . esc_html( $usersearch ) . '</strong>'
                );
                echo '</span>';
        }
        ?>

        <hr class="wp-header-end">

        <?php $wp_list_table->views(); ?>

        <form method="get" class="search-form">
                <?php $wp_list_table->search_box( __( 'Search Users' ), 'all-user' ); ?>
        </form>

        <form id="form-user-list" action="users.php?action=allusers" method="post">
                <?php $wp_list_table->display(); ?>
        </form>
</div>

<?php require_once ABSPATH . 'wp-admin/admin-footer.php'; ?>