title: Is it preferred to assign POST variable to an actual variable?
body: <p>I've just completed my registration form for my website and for the action page where all the SQL takes place I've just skipped assigning the POST variable to actual ones, like this...</p>
  
  <p>$username = $_POST['username'];</p>
  
  <p>Instead I've just been using the POST variables throughout the PHP page. Are there any risks or errors that can be met whilst practicing? </p>
  
  <p>Also, excuse me if I am using incorrect terminology... </p>