register_new.php

《PHP和MySQL Web开发》(第三版) Source

<?php
  // include function files for this application
  require_once('bookmark_fns.php');

  //create short variable names
  $email=$_POST['email'];
  $username=$_POST['username'];
  $passwd=$_POST['passwd'];
  $passwd2=$_POST['passwd2'];
  // start session which may be needed later
  // start it now because it must go before headers
  session_start();
  try
  {
    // check forms filled in
    if (!filled_out($_POST))
    {
      throw new Exception('You have not filled the form out correctly - please go back'
          .' and try again.');    
    }
   
    // email address not valid
    if (!valid_email($email))
    {
      throw new Exception('That is not a valid email address.  Please go back '
                          .' and try again.');
    } 

    // passwords not the same 
    if ($passwd != $passwd2)
    {
      throw new Exception('The passwords you entered do not match - please go back'
                           .' and try again.');
    }

    // check password length is ok
    // ok if username truncates, but passwords will get
    // munged if they are too long.
    if (strlen($passwd)<6 || strlen($passwd) >16)
    {
      throw new Exception('Your password must be between 6 and 16 characters.'
                           .'Please go back and try again.');
    }
   
    // attempt to register
    // this function can also throw an exception
    register($username, $email, $passwd);
    // register session variable 
    $_SESSION['valid_user'] = $username;
    
    // provide link to members page
    do_html_header('Registration successful');
    echo 'Your registration was successful.  Go to the members page '
          .'to start setting up your bookmarks!';
    do_html_url('member.php', 'Go to members page');
   
   // end page
   do_html_footer();
  }
  catch (Exception $e)
  {
     do_html_header('Problem:');
     echo $e->getMessage(); 
     do_html_footer();
     exit;
  } 
?>