title: PHP Regex: extract last number in filename
body: <p>I need a regex with extract me a number which is always at the end of a file wrapped in ().</p>
  
  <p>For example:</p>
  
  <blockquote>
    <p>Vacation (1).png <strong>returns 1</strong></p>
    
    <p>Vacation (Me and Mom) (2).png <strong>returns 2</strong></p>
    
    <p>Vacation (5) (3).png <strong>returns 3</strong></p>
  </blockquote>
  
  <p>Hope some regex pros are out there :) </p>