Question : How to determine an IP address is belong which Country/ISP?

How to determine an IP address is belong which Country / ISP?
And Can I determine with PHP script or HTML...?

Answer : How to determine an IP address is belong which Country/ISP?

the process is called geolocation, also google for ip to location.

for example, I found these days this one, the demo shows quite impressivley how easy the code integrates:
http://www.geobytes.com/ipLocator.htm