Creating a registration form and am getting a parse error on the line in the html form code for email address?!

Any thoughts please.

Code:
// Check for a first name:
	if (empty($_POST['first_name'])) {
	$errors[]='You forgot to enter your first name.';
	} else {
	$fn = trim($_POST['first_name']);
	}
	
	// Check for a last name:
	if (empty($_POST['last_name']))
...