title: PHP - Make multi-dimensional associative array from a delimited string
body: <p>Can you turn this string:</p>
  
  <pre><code>"package.deal.category"
  </code></pre>
  
  <p>Into an array like this:</p>
  
  <pre><code>$array['package']['deal']['category']
  </code></pre>
  
  <p>The value inside the index at this point can be anything.</p>