Variables

<html>
<head>
<title>Variables</title>
</head>
<body>
<?php
   
 	  // String variables (this is a single-line comment)
 	  $firstname = 'Elmer';
 	  $surname = 'Fudd';
 	  $message1 = "Hello, $firstname";
 	  $message2 = "Your fullname is $firstname $surname";
 	  echo $message1 . "<br>";
 	  echo ($message2);  // parenthesis are optional
 	  echo "<p>See you later, Ms. $surname</p>");
   
 	  /* 
         Numerical variables
         (This is a multi-line comment) 
     */
 	  $a = 1.0;
 	  $b = 2.5;
 	  $c = $a + $b;
   
 	  print "a + b = $c";  // print works like echo
 	  ?>
</body>
</html>