title: Is seeing Notice in the HTML of any concern for PHP?
body: <p>I went to view page source and seen this in the HTML for a select drop-down list that is populated by a query:</p>
  
  <p><b>Notice</b>:  Constant DB_USER already defined in <b>C:\xampp\htdocs\bookhippie\mysqli_connect.php</b> on line <b>8</b><br />
  <br />
  <b>Notice</b>:  Constant DB_PASSWORD already defined in <b>C:\xampp\htdocs\bookhippie\mysqli_connect.php</b> on line <b>9</b><br />
  <br />
  <b>Notice</b>:  Constant DB_HOST already defined in <b>C:\xampp\htdocs\bookhippie\mysqli_connect.php</b> on line <b>10</b><br />
  <br />
  <b>Notice</b>:  Constant DB_NAME already defined in <b>C:\xampp\htdocs\bookhippie\mysqli_connect.php</b> on line <b>11</b><br /></p>
  
  <p>Should I be concerned about this? And if so, what should I be looking for in the PHP?</p>
  
  <p>Thanks!</p>