title: Multiply string values
body: <p>I have a string like this:</p>
  
  <pre><code>$price = "15.50";
  </code></pre>
  
  <p>And I would like to multiply it. Ex:</p>
  
  <pre><code>$price*$amount;
  </code></pre>
  
  <p>I tried something like this:</p>
  
  <pre><code>$Total = floatval($price)*$amount;
  </code></pre>
  
  <p>But I always get "30" as return. How can I code to get "31.00"?</p>
  
  <p>Thanks a lot.</p>