如何在codeigniter中设置重置密码功能？

Question

每当我运行这段代码时，我都会在提交时收到一个空白屏幕。代码似乎不起作用，我不确定为什么。任何人都可以看到问题吗？我已经检查过它的语法已经多次。

控制器：

public function changepwd(){ 
    $this->form_validation->set_rules('oldpassword','Old Password','required|trim|xss_clean|callback_change'); 
    $this->form_validation->set_rules('password1','New Password','required|trim'); 
    $this->form_validation->set_rules('password2','Confirm Password','required|trim|matches[password1]'); 

if($this->form_validation->run()= true){ 
    redirect('admin'); 
    }else{ 
$this->form_validation->set_message('change','info is wrong'); 
redirect('admin'); 
} 
} 

public function change(){ 
$this->load->view('error_display'); 
$oldpass = $this->input->post('oldpassword'); 
if(isset($oldpass)){ 
    if($this->input->post('password1') == $this->input->post('password2')){ 

     $session=$this->session->userdata("logged_in"); 
     $username= $session['username']; 

      $query = "SELECT * FROM database where username='$username'"; 
      $result = $this->db->query($query); 
      $row=$result->row(); 
      $pass = $row->password; 
      $s= $row->salt; 
      $user_old_pass = sha1($s.$oldpass); 

      if($pass == $user_old_pass){ 
       $new = substr(uniqid(rand(), true), 0, 20); 
       $users_password = $this->input->post('pass1'); 
       $new_password = sha1($new.$user_password); 
       $data = array($new,$new_password); 
       $this->update_model->insert_model($data); 
       $this->form_validation->set_message('change','saved'); 
       $this->load->view('admin'); 

      }else{ 
       $this->form_validation->set_message('change','<p class="error">Incorrect Password</p>'); 
       return false; 
       redirect('admin'); 
      } 
    }else{ 
     $this->form_validation->set_message('change','passwords dont match'); 
     return false; 
     redirect('admin'); 
    }; 

}else{ 
    $this->form_validation->set_message('change','old password is not entered'); 
    return false; 
    redirect('admin'); 
} 

型号：

function login($data) 
    { 
    $this->db->update('database', $data); 
     } 

Answer 1

您

if($this->form_validation->run()= true){ 

应该

if($this->form_validation->run() == FALSE) { 

，因为你每次重定向到'admin'