title: Divide a city in n parts
body: <p>I have city example: London with center lon, lat and radius of city. </p>
  
  <p>I want to divide city region into 20 or n different circles and want to get lon, lat and radius of each region. </p>
  
  <p>Is there any algorithm available in php? </p>
  
  <p>Thanks</p>