title: Print numeric values to two decimal places
body: <p>I'm using a simple loop to echo back some numbers.</p>
  <pre><code>&lt;?php
  $inc = 0.25;
  $start =  0.25;
  $stop = 5.00;
  ?&gt;
          
  &lt;?php while($start != ($stop + $inc)){ ?&gt;
  &lt;option&gt;&lt;?php echo $start ?&gt;&lt;/option&gt;
  &lt;?php $start = $start + $inc; ?&gt;
  &lt;?php } ?&gt;
  </code></pre>
  <p>However <code>5.00</code> appears as <code>5</code> and <code>4.50</code> appears as <code>4.5</code>.</p>
  <p>How would I get this script to display <code>5.00</code>, <code>4.00</code>, <code>3.00</code>, <code>3.50</code>?</p>