WP_AJAX.php

<?php

Class ExampleAction extends WP_AJAX{

    protected $action = 'example-action';

    protected function run(){

    	if($this->has('name')){
        	update_option('name', $this->get('name'));
        }

    }
}
ExampleAction::listen();



ExampleAction::url(); // http://example.com/wp-admin/admin-ajax.php?action=example-action
ExampleAction::url(['name' => 'Anthony Budd']); // http://example.com/wp-admin/admin-ajax.php?action=example-action&name=Anthony%20Budd

// Example:
// <a href="<?= ExampleAction::url(['name' => 'Anthony Budd']) ?>">Link</a>