title: Add a decimal point 2 chars from the right under PHP
body: <p>I have a big array containing lots of elements containing numerical data.</p>
  
  <p>Example:</p>
  
  <pre><code>3200
  34300
  1499
  12899
  </code></pre>
  
  <p>I want to convert these into:</p>
  
  <pre><code>32.00
  343.00
  14.99
  128.99
  </code></pre>
  
  <p>How can I achieve this elegantly under PHP using no regex?</p>
  
  <p>Thanks in advance.</p>