title: Floor function not working
body: <p>Given the following cod:</p>
  
  <pre><code> $number = 1050.55;
   var_dump($number - floor($number));
  </code></pre>
  
  <p>Why does the above code returns the following result?</p>
  
  <pre><code>float(0.54999999999995)
  </code></pre>
  
  <p>I want a fixed value like 0.55 in this case. Can you help me please?</p>