title: Converting a string into array
body: <p>I have a string like this:</p>
  
  <pre><code>$values = "[121],[622],[872]";
  </code></pre>
  
  <p>I would like to convert this into an array, I would like each number in the square brackets to be an array item.</p>
  
  <p>any suggestions how I can do this?</p>