button redirection base on geolocation

how can I make one button to different URL base on my country location? (for instance, I visited a website if I'm in the USA and I click on a view button on that website I should be redirected to Amazon but if I'm in china and I click that same button I should be redirected to Alibaba). The language I want to use is PHP. I would really appreciate it if anyone can assist me with this request. Thank you