I have included the option with IP To Country to convert single or multiple IP addresses on the fly . 

For example, if you want to display a webpage visitor's flag icon beside his username, you can use IP To Country in an image tag along with the visitor's IP address to make it easy.
Here's an example:
The PHP code would look like this:

There are several modes to choose from and the mode is easily changed in the URL address for IP To Country.
Example: http://jasonlau.biz/ip2country/{MODE HERE}/{IP HERE}

The modes are as follows:
xml - Generates xml 1.0 file containing all of the following data.
rss - Generates rss 2.0 file containing all of the following data.

ipv4 - Generates an IPv4 Internet network address.
cc1 - Country Code 1 Example: US
cc2 - Country Code 2 Example: USA
cn1 - Country Name 1 Example: UNITED STATES
cn2 - Country Name 2 Example: united states
cn3 - Country Name 3 Example: United States
flag - Generates flag icon for that country

You can also make direct requests by using your browser and entering the following URL into the browser's address bar:
http://jasonlau.biz/ip2country/{MODE HERE}/{IP HERE}

IP To Country will also accept a comma separated list of IP addresses and will return a comma separated list of results.
Example: http://jasonlau.biz/ip2country/{MODE HERE}/{IP HERE},{IP HERE},{IP HERE}