title: Basic age validation from date of birth in PHP
body: <p>I have a date of birth in the format...</p>
  
  <pre><code>30-01-1983
  </code></pre>
  
  <p>I am trying to work out how to ensure that at least 16 years have passed since this date.  A basic age validation.</p>
  
  <p>It seems to be defeating me but I think I am just overcomplicating it.  Does anyone have an example they can point me in the direction of?</p>