Wordpress Roles

function custom_remove_menus(){

    // Get current user's data
    $current_user = wp_get_current_user();
    $user_id = $current_user->ID;

    // Check user's roles
    $user = new WP_User( $user_id );
    if ( !empty( $user->roles ) && is_array( $user->roles ) ) {
        if( in_array( 'editor', $user->roles ) ) {
            // Remove menu items
            remove_menu_page( 'edit.php?post_type=portfolio');
        }
    }
}
add_action( 'admin_menu', 'custom_remove_menus' );