title: PHP: Select a random numbers, evenly spaced
body: <p>What is the most effective way to create a PHP function that will pick a given amount of random number, but evenly spaced out and contain no duplicates?</p>
  
  <p>For example say you wanted 3 random number between 0-6 the result could be <strong>[0, 2, 5]</strong> or <strong>[1, 3, 6]</strong>.</p>
  
  <p>Any ideas on how to get started?</p>