May 30, 2020

Use Php to write the instance code for the Email activation validation after registration

There are two pages, register.php and verify.php

1. User registration form register.php

 <html>
 <body>
   <form action="register.php" method="post" name="register">
       User name: <input type="text" name="username" />
       Password: <input type="password" name="password" />
       Email: <input type="text" name="email" />
      <input type="submit" value=" registered " />
   </form>
 </body>
 </html>

2. Create the user data form Users

 CREATE TABLE IF NOT EXISTS `users` (
   `id` int(11) NOT NULL auto_increment,
   `status` varchar(20) NOT NULL,
   `username` varchar(20) NOT NULL,
   `password` varchar(20) NOT NULL,
   `email` varchar(20) NOT NULL,
   `activationkey` varchar(100) NOT NULL,
   PRIMARY KEY  (`id`),
   UNIQUE KEY `username` (`username`),
   UNIQUE KEY `email` (`email`),
   UNIQUE KEY `activationkey` (`activationkey`)
 ) ENGINE=MyISAM  DEFAULT CHARSET=latin1 AUTO_INCREMENT=9 ;

3. Create verification code and store the user registration information into the data table We use the state ‘verify’ for users who are not yet active.

 $activationKey =  mt_rand() . mt_rand() . mt_rand() . mt_rand() . mt_rand();
 $username = mysql_real_escape_string($_POST[username]);
 $password = mysql_real_escape_string($_POST[password]);
 $email = mysql_real_escape_string($_POST[email]);  
 $sql="INSERT INTO users (username, password, email, activationkey, status) VALUES ('$username', '$password', '$email', '$activationKey', 'verify')";

4. Send verification code

 echo "An email has been sent to $_POST[email] with an activation key. Please check your mail to complete registration.";
 ##Send activation Email
 $to      = $_POST[email];
 $subject = " YOURWEBSITE.com Registration";
 $message = "Welcome to our website!\r\rYou, or someone using your email address, has completed registration at YOURWEBSITE.com. You can complete registration by clicking the following link:\rhttp://www.YOURWEBSITE.com/verify.php?$activationKey\r\rIf this is an error, ignore this email and you will be removed from our mailing list.\r\rRegards,\ YOURWEBSITE.com Team";
 $headers = 'From: noreply@ YOURWEBSITE.com' . "\r\n" .  
     'Reply-To: noreply@ YOURWEBSITE.com' . "\r\n" .  
     'X-Mailer: PHP/' . phpversion();  
 mail($to, $subject, $message, $headers);

5. Verify the activation code verify.php If the captcha code is the same, the user is activated.

 $queryString = $_SERVER['QUERY_STRING'];
 $query = "SELECT * FROM users";
 $result = mysql_query($query) or die(mysql_error());
 while($row = mysql_fetch_array($result)){  
     if ($queryString == $row["activationkey"]){
        echo "Congratulations!" . $row["username"] . " is now the proud new owner of a YOURWEBSITE.com account.";
        $sql="UPDATE users SET activationkey = '', status='activated' WHERE (id = $row[id])";         
        if (!mysql_query($sql)) {
           die('Error: ' . mysql_error());
        }          
         //  At this point, the user has fully activated the account and you can redirect the page to the login screen   
     }
   } // end of while