title: Security concern when accessing php superglobal directly
body: <p>I just upgraded my IDE (Netbean) to 1.7.4 beta, to test it out... and it seems that now it si giving me a warning whenever I access my superglobal variable. It says</p>
  
  <blockquote>
    <p>Do not access supergolobal $_POST Array Directly</p>
  </blockquote>
  
  <p>I am currently just using this</p>
  
  <pre><code> $taxAmount = intval(ceil($_POST['price']*($TAX-1)));
  </code></pre>
  
  <p>How much of a security concern is this really?</p>
  
  <p>Is this the proper way to do it, and does it make a difference?</p>
  
  <pre><code> $price = $_POST['price'];
   $taxAmount = intval(ceil($price*($TAX-1)));
  </code></pre>