CLI role switching

<?php
        global $wp_roles;

        $current_roles = array_keys( $wp_roles->roles );
        WP_CLI::line( 'Current roles: ' . implode( ', ', $current_roles ) );

        $keep_roles = array(
                'administrator',
                'editor',
                'author',
                'ad_editor',
                'attributed',
        );
        WP_CLI::line( 'Roles to keep: ' . implode( ',', $keep_roles ) );

        $deleted_these_roles = array_diff( $current_roles, $keep_roles );
        WP_CLI::line( 'Roles to delete: ' . implode( ',', $deleted_these_roles ) );

        $admin = [get_role](http://codex.wordpress.org/Function_Reference/get_role)( 'administrator' );
        $admin->[add_cap](http://codex.wordpress.org/Function_Reference/add_cap)( 'edit_ads' );
        $admin->[add_cap](http://codex.wordpress.org/Function_Reference/add_cap)( 'curate' );
        $admin->[add_cap](http://codex.wordpress.org/Function_Reference/add_cap)( 'unfiltered_html' );

        $editor_caps_mod = $wp_roles->roles[ 'editor' ][ 'capabilities' ];
        $editor_caps_mod[ 'curate' ] = true;
        $editor_caps_mod[ 'manage_options' ] = true;
        [remove_role](http://codex.wordpress.org/Function_Reference/remove_role)( 'editor' );
        [add_role](http://codex.wordpress.org/Function_Reference/add_role)( 'editor', 'Deputy Editor', $editor_caps_mod );