如何对非管理员禁用WordPress更新通知

if ( !current_user_can( 'manage_options' ) ) {	//Disable Theme Updates remove_action( 'load-update-core.php', 'wp_update_themes' );	add_filter( 'pre_site_transient_update_themes', create_function( '$a', "return null;" ) ); wp_clear_scheduled_hook( 'wp_update_themes' );	//Disable Plugin Updates	remove_action( 'load-update-core.php', 'wp_update_plugins' ); add_filter( 'pre_site_transient_update_plugins', create_function( '$a', "return null;" ) ); wp_clear_scheduled_hook( 'wp_update_plugins' );	//Diasable Core Updates	add_filter( 'pre_site_transient_update_core', create_function( '$a', "return null;" ) ); wp_clear_scheduled_hook( 'wp_version_check' );}