注册页面没有处理数据到数据库

我正在开发一个用户注册和登录的网站，完成页面配置后，我试图注册它工作完美，第二天晚些时候我试图注册但页面没有加载，填写数据后，如果我点击提交，它重新加载相同的注册页面没有效果，如何解决这个问题

  SQL Query Processing code: (class.newuser.php)
 enter code here


       class User 
      {
      public $user_active = 0;
      private $clean_email;
      public $status = false;
      private $clean_password;
      private $clean_username;
      private $unclean_username;
      public $sql_failure = false;
      public $mail_failure = false;
      public $email_taken = false;
      public $username_taken = false;
      public $activation_token = 0;
      function __construct($user,$pass,$email)
      {
      //Used for display only
      $this->unclean_username = $user;
     //Sanitize
     $this->clean_email = sanitize($email);
     $this->clean_password = trim($pass);
     $this->clean_username = sanitize($user);
     if(usernameExists($this->clean_username))
     {
     $this->username_taken = true;
     }
     else if(emailExists($this->clean_email))
     {
     $this->email_taken = true;
     }
    else
    {
     //No problems have been found.
    $this->status = true;
    }
    }
    public function userPieAddUser()
    {
    global $db,$emailActivation,$websiteUrl,$db_table_prefix;
  //Prevent this function being called if there were construction errors
  if($this->status)
   {
    //Construct a secure hash for the plain text password
    $secure_pass = generateHash($this->clean_password);
    //Construct a unique activation token
    $this->activation_token = generateactivationtoken();
    //Do we need to send out an activation email?
    if($emailActivation)
    {
        //User must activate their account first
        $this->user_active = 0;
        $mail = new userPieMail();
        //Build the activation message
        $activation_message = lang("ACTIVATION_MESSAGE",array("{$websiteUrl}/",$this->activation_token));
        //Define more if you want to build larger structures
        $hooks = array(
            "searchStrs" => array("#ACTIVATION-MESSAGE","#ACTIVATION-KEY","#USERNAME#"),
            "subjectStrs" => array($activation_message,$this->activation_token,$this->unclean_username)
        );
        /* Build the template - Optional, you can just use the sendMail function 
        Instead to pass a message. */
        if(!$mail->newTemplateMsg("new-registration.txt",$hooks))
        {
            $this->mail_failure = true;
        }
        else
        {
            //Send the mail. Specify users email here and subject. 
            //SendMail can have a third parementer for message if you do not wish to build a template.
            if(!$mail->sendMail($this->clean_email,"New User"))
            {
                $this->mail_failure = true;
            }
        }
    }
    else
    {
        //Instant account activation
        $this->user_active = 1;
    }   

    if(!$this->mail_failure)
    {
            //Insert the user into the database providing no errors have been found.
            $sql = "INSERT INTO `".$db_table_prefix."users` (
                    `username`,
                    `username_clean`,
                    `password`,
                    `email`,
                    `activationtoken`,
                    `last_activation_request`,
                    `LostpasswordRequest`, 
                    `active`,
                    `group_id`,
                    `sign_up_date`,
                    `last_sign_in`
                    )
                    VALUES (
                    '".$db->sql_escape($this->unclean_username)."',
                    '".$db->sql_escape($this->clean_username)."',
                    '".$secure_pass."',
                    '".$db->sql_escape($this->clean_email)."',
                    '".$this->activation_token."',
                    '".time()."',
                    '0',
                    '".$this->user_active."',
                    '1',
                    '".time()."',
                    '0'
                    )";
        return $db->sql_query($sql);
    }
}
} 
}
?>

enter code here


    <?php
require_once("models/config.php");

//Prevent the user visiting the logged in page if he/she is already logged in
if(isUserLoggedIn()) { header("Location: index.php"); die(); }
     ?>

    <?php

    //Forms posted
     if(!empty($_POST))
     {
    $errors = array();
    $email = trim($_POST["email"]);
    $username = trim($_POST["username"]);
    $password = trim($_POST["password"]);
    $confirm_pass = trim($_POST["passwordc"]);
    //Perform some validation
    //Feel free to edit / change as required
    if(minMaxRange(5,25,$username))
    {
        $errors[] = lang("ACCOUNT_USER_CHAR_LIMIT",array(5,25));
    }
    if(minMaxRange(8,50,$password) && minMaxRange(8,50,$confirm_pass))
    {
        $errors[] = lang("ACCOUNT_PASS_CHAR_LIMIT",array(8,50));
    }
    else if($password != $confirm_pass)
    {
        $errors[] = lang("ACCOUNT_PASS_MISMATCH");
    }
    if(!isValidemail($email))
    {
        $errors[] = lang("ACCOUNT_INVALID_EMAIL");
    }
    //End data validation
    if(count($errors) == 0)
    {   
            //Construct a user object
            $user = new User($username,$password,$email);
            //Checking this flag tells us whether there were any errors such as possible data duplication occured
            if(!$user->status)
            {
                if($user->username_taken) $errors[] = lang("ACCOUNT_USERNAME_IN_USE",array($username));
                if($user->email_taken)    $errors[] = lang("ACCOUNT_EMAIL_IN_USE",array($email));       
            }
            else
            {
                if(!$user->userPieAddUser())
                {
                    if($user->mail_failure) $errors[] = lang("MAIL_ERROR");
                    if($user->sql_failure)  $errors[] = lang("SQL_ERROR");
                }
            }
    }
   if(count($errors) == 0) 
   {
            if($emailActivation)
            {
                 $message = lang("ACCOUNT_REGISTRATION_COMPLETE_TYPE2");
            } else {
                 $message = lang("ACCOUNT_REGISTRATION_COMPLETE_TYPE1");
            }
   }
   }
       ?>
     <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
     <html xmlns="http://www.w3.org/1999/xhtml">
     <head>
      <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
      <title>Registration | <?php echo $websiteName; ?> </title>
      <?php require_once("head_inc.php"); ?>
      </head>
       <body>
       <div class="modal-ish">
        <div class="modal-header">
       <h2>Sign Up</h2>
       </div>
       <div class="modal-body">
       <div id="success">
       <p><?php echo $message ?></p>
       </div>
        <div id="regbox">
            <form name="newUser" action="<?php echo $_SERVER['PHP_SELF'] ?>" method="post">
            <p>
                <label>Username:</label>
                <input type="text" name="username" />
            </p>
            <p>
                <label>Password:</label>
                <input type="password" name="password" />
            </p>
            <p>
                <label>Re-type Password:</label>
                <input type="password" name="passwordc" />
            </p>
            <p>
                <label>Email:</label>
                <input type="text" name="email" />
            </p>
  </div>           
  </div>

         <div class="modal-footer">
         <input type="submit" class="btn btn-primary" name="new" id="newfeedform" value="Register" />
             </div>  
            </form>
        </div>
        <div class="clear"></div>
        <p style="margin-top:30px; text-align:center;"><a href="login.php">Login</a> / <a href="forgot-password.php">Forgot Password?</a> / <a href="<?php echo $websiteUrl; ?>">Home Page</a></p>
       </body>
       </html>