you then have to submit the form containing the updated value and query the db with an UPDATE query
PHP Code:
$query = "UPDATE info SET title='" . $_POST['title'] . "', first_name='" . $_POST['fname'] . " ... WHERE uni_pass = '" . $_POST['univerpass'] . "' and dob = '" . $_POST['date'] . "'"; 

EDIT: Also, you should use
PHP Code:
<?php echo $email; ?>
without quote...