How to find nearest location using latitude and longitude from SQL database?

Question

I want to find a nearest location from following database table

Address                            Latitude                longitude 

Kathmandu 44600, Nepal          


        

Answer 1

sesach : ( 3959 * acos( cos( radians('.$_REQUEST['latitude'].') ) * cos( radians( latitude ) ) * cos( radians( longitude ) - radians('.$_REQUEST['longitude'].') ) + sin( radians('.$_REQUEST['latitude'].') ) * sin( radians( latitude ) ) ) ) <='.$_REQUEST['mile'];