Pagers can be easily added to forms using the pager type. You can provide the following optional attributes:

• #element: The pager ID to use if you need to distinguish between multiple pagers on the screen; it defaults to 0
• #parameters: An associative array of query parameters to append to each link of the pager
• #quantity: The maximum number of links to display; it defaults to 9
• #tags: Text to use for the First, Previous, Next, and Last links
• #route_name: The name of the route to use for the URLs; it defaults to <none>, which uses the current route

Consider this example:

// Create dummy pager 
pager_default_initialize(100, 10); 
     
$form['pager'] = array( 
  '#type' => 'pager', 
);