This example shows you how to find a users IP address, city and country. This is useful for tracking user activity within your site if they are not authenticated members, or even blocking users from certain countries or who are violating the use policy of your website. The city returned is actually the city in which the ISP is based, not the user. It uses an API call to an external site with a free limit of 50 calls per minute, thereafter you would need to pay a subscription fee. See the example below.