title: Php question: Print variable names
body: <p>We are developing a website in php where 2 pictures are displayed. Each time you refresh the page the pictures shuffle. The pictures are stored in an array:</p>
  
  <pre><code>$pictures = array ( '49ers.jpg', 'bears.jpg', 'bengals.jpg',
                      'bills.jpg', 'broncos.jpg',
                      'browns.jpg', 'buccaneers.jpg',
                      'cardinals.jpg', 'chargers.jpg', 'cheifs.jpg', 'colts.jpg', 'cowboys.jpg', 'dolphins.jpg', 'eagles.jpg', 'falcons.jpg', 'giants.jpg', 'jaguars.jpg', 'jets.jpg', 'lions.jpg',
  'packers.jpg', 'panthers.jpg', 'patriots.jpg', 'raiders.jpg', 'rams.jpg', 'ravens.jpg', 'redskins.jpg', 'saints.jpg', 'seahawks.jpg', 'steelers.jpg', 'texans', 'titans.jpg', 'vikings.jpg', );
  </code></pre>
  
  <p>How would we write an echo/print statement to display the file names of the pictures below? </p>