Don't allow subscribers to view the admin panels or the admin bar

disable-admin-bar

/**
 * Disable admin bar on the frontend of your website
 * for subscribers.
 */
function themeblvd_disable_admin_bar() { 
	if( ! current_user_can('edit_posts') )
		add_filter('show_admin_bar', '__return_false');	
}
add_action( 'after_setup_theme', 'themeblvd_disable_admin_bar' );
 
 
/**
 * Redirect back to homepage and not allow access to 
 * WP admin for Subscribers.
 */
function themeblvd_redirect_admin(){
	if ( ! current_user_can( 'edit_posts' ) ){
		wp_redirect( site_url() );
		exit;		
	}
}
add_action( 'admin_init', 'themeblvd_redirect_admin' );