title: PHP: Locale aware number format
body: <p>I want to format the number 3253454 for my website visitors.</p>
  
  <p>If I use the inbuilt number_format function, I get: 3,253,454 which is great for UK and USA, however most other countries use 3.253.454</p>
  
  <p>I have many international visitors.</p>
  
  <p>Can anyone give me a pointer to the best practice here?</p>
  
  <p>Ideally I wish to get the browser's locale and format the number accordingly. Is this even possible in PHP?</p>