Thêm hoặc xóa widgets trong WordPress dashboard

// Add a widget in WordPress Dashboard
function wpc_dashboard_widget_function() {
	// Entering the text between the quotes
	echo "<ul>
	<li>Release Date: March 2012</li>
	<li>Author: Aurelien Denis.</li>
	<li>Hosting provider: my own server</li>
	</ul>";
}
function wpc_add_dashboard_widgets() {
	wp_add_dashboard_widget('wp_dashboard_widget', 'Technical information', 'wpc_dashboard_widget_function');
}
add_action('wp_dashboard_setup', 'wpc_add_dashboard_widgets' );

//HIDING UNWANTED WORDPRESS DASHBOARD WIDGETS
add_action('wp_dashboard_setup', 'wpc_dashboard_widgets');
function wpc_dashboard_widgets() {
	global $wp_meta_boxes;
	//chú ý sử dụng print_r($wp_meta_boxes); để biết tên widget cần xoá.
	// Today widget
	unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_right_now']);
	// Last comments
	unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_recent_comments']);
	// Incoming links
	unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_incoming_links']);
	// Plugins
	unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins']);
}

print_r($wp_meta_boxes['dashboard']);