View difference between Paste ID: uDMmFaFL and sXTzwjzt

-?php
+<?php
 
 //includes
 
 include('connect.php');
 
 //get cookie value & display username if cookie set.
 
 If(isset($_COOKIE['username'])) {
 echo "Welcome" . $_COOKIE['user'] . "!<br />";
 
 //retrieve user ID for accessing user profile.
 
 $username = $_COOKIE['username'];
 
 //search for user with username stored in cookie in database, then obtain their profile ID.
 
 $sql = "SELECT user_id FROM users WHERE username='$username'";
 $id = mysql_query($sql);
 
 
 } else {
 
 echo "Welcome, Guest! <br/>";
 
 }
 
 ?>
 
 <html>
 <head>
 <center><b>
 Home
 </b></center>
 <style type="text/css">
 a:link {color:blue;text-decoration:none;}
 a:visited {color:purple;text-decoration:none;}
 a:hover {color:black;text-decoration:none;}
 </style>
 </head>
 
 <title> Home </title>
 <br />
 <hr />
 <br />
 <br />
 <? php 'a href=profile.php?id=."$id".' ?>